| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 089193000 | Gas ports and/or regulators | 76 |
| 20080236380 | Firearm with a Pressure Accumulator - The firearm with pressure accumulator ( | 10-02-2008 |
| 20080307954 | GAS BLEED ASSEMBLIES FOR USE WITH FIREARMS - Gas bleed assemblies for use with firearms are described. An example gas bleed assembly for use with a firearm having a barrel includes a gas cylinder that defines at least one gas outlet to be fluidly coupled to a bore of a barrel. The gas cylinder is substantially fixed relative to the barrel. Additionally the example gas bleed assembly includes a holding fixture that is substantially fixed relative to a housing having a front edge. The holding fixture interacts with the at least one gas outlet. A temperature induced variation of geometry of the barrel changes a position of the gas cylinder relative to the holding fixture and wherein a pressure acting within the gas cylinder is associated with the position of the at least one gas outlet relative to the holding fixture. | 12-18-2008 |
| 20100024636 | Gas pressure mechanism in gas-operated firearm - A gas pressure mechanism that receives and supplies gas pressure to a semi or automatic shotgun during the shotgun's reloading operation. The gas pressure mechanism includes twin body members having a front cylinder in fluid communication with a rear cylinder. Each rear cylinder includes a rear gas port disposed in communication with the interior of the shotgun barrel such that gases of combustion is bled through the rear gas ports from the interior of the barrel to the interior of the rear cylinders. Similarly, each front cylinder includes a front gas port disposed in communication with the interior of the shotgun barrel at a location to effectively recoil and counter-recoil the shotgun's piston or breech bolt to its rear most position. The rear cylinders, are situated immediately in front of the shotgun's shell chamber such that the rear gas ports capture and receive the gas pressure developed immediately behind the shell load as it travels through the barrel after firing. | 02-04-2010 |
| 20100095834 | FIREARM HAVING AN INDIRECT GAS OPERATING SYSTEM - A black rifle configuration automatic or semi-automatic firearm having an indirect gas operating system. The firearm has a black rifle configuration receiver assembly having a bolt assembly enclosed within. The bolt assembly having a striking surface and a barrel assembly having a bore, the barrel assembly being coupled to the receiver assembly. A gas block is fitted to the barrel assembly, the gas block having a front folding sight. A rod assembly has a striking rod. Gas discharged from a fired cartridge displaces the piston and causes the striking rod displace the bolt assembly. | 04-22-2010 |
| 20100199836 | Gas piston assembly and bolt carrier for gas-operated firearms - A kit for modifying a bolt carrier group actuating apparatus of a firearm manufacturer-configured with a gas-driven bolt carrier comprises a gas expansion assembly, an operating rod driven bolt carrier and an operating rod. The gas expansion assembly is configured for receiving combustion gases from an as-manufactured OEM gas block of the firearm and for facilitating expansion of said gases for generating a bolt carrier driving force. The operating rod driven bolt carrier includes an operating rod engaging lug. The operating rod driven bolt carrier is configured for being operably engaged within an as-manufactured OEM receiver body of the firearm with the operating rod engaging lug located in a gas tube lug receiving portion of the as-manufactured OEM receiver body. The operating rod is engagable between the gas expansion assembly and the operating rod engaging lug. | 08-12-2010 |
| 20100224056 | GAS OPERATED FIREARM ACTION DELAY DEVICE - The invention relates to a device for delaying the gas action operated firearm. The device includes a gas chamber and an outlet, wherein the outlet is in fluid communication with the action tube of the firearm. The device has a port in fluid communication between the gas chamber and the barrel and a one-way check valve in the port. A gas release valve is included and is disposed on the container and in fluid communication with the gas chamber and the outlet. The device further includes linkage attached to the gas release valve and in mechanical communication with the bolt, such that when the gas release valve is in the closed position, gas is retained in the gas chamber and the linkage blocks the bolt from moving, and when the gas release valve is in the open position the linkage unblocks the bolt permitting normal gas action of the firearm. | 09-09-2010 |
| 20100236396 | CLAMPED GAS BLOCK FOR BARREL - A gas block clamping apparatus for a firearm includes a plurality of sections, each including a shaped upper section, and a lower cylindrical section to which the shaped upper section is attached. A plurality of clamp sections are symmetrically disposed on opposite sides of a barrel of the firearm, each clamp section having an upper surface for attaching the gas block to the barrel, a curved surface that aligns the clamp section to an outer surface of the barrel when the clamp sections are tightened, and a lower surface that aligns with the shaped upper section of the gas block. A plurality of fasteners are disposed through a plurality of openings in the lower surface of the clamp sections and the shaped upper surface of the gas block for securing each clamp section to both the barrel and gas block. | 09-23-2010 |
| 20100251885 | GAS SYSTEM FOR FIREARMS - A piston assembly is provided for a gas-operated firearm of the type having a chamber and a barrel. The piston assembly includes a gas expansion housing and a piston mounted within the gas expansion housing. An annular recess is formed in the outer wall of the piston to receive exhaust gases diverted from the barrel upon firing of the firearm. At least one longitudinally extending groove extends from the annual recess to the head of the piston and forms a pathway for diverting the exhaust gases to the head of the piston. During firing, pressurized gases are diverted into the annular recess and expand longitudinally from the annular recess to the piston head, whereupon the pressurized exhaust gas drives the gas piston rearwardly along the housing. | 10-07-2010 |
| 20100275769 | Gas regulator flash hider - A gas regulator which incorporates a flash hider for use with gas operated firearms. By incorporating a flash hider around the gas vent for the host firearms operating system unburnt particles which produce flash from this exit point may be effectively disrupted. By disrupting and redirecting these unburnt powder particles flash is thereby eliminated from the firearms operating system. In the preferred embodiment the Advanced Armament Blackout flash hider is used but the device is not limited to this specific design. Military end user are particularly interested in an article of manufacture which eliminates flash from the gas system since it will disrupt the use of night vision and give away a soldiers position during low light, no light operations. | 11-04-2010 |
| 20100275770 | Switchblock - An adjustable gas block designed to interface with an autoloading firearms gas system. Three positions of adjustment are provided to optimize the gas flow from the barrel for the host firearm. One of the three provided positions of adjustment is selected if a silencer is in use, not in use, or if the user desires to stop the autoloading function of the firearm entirely. This design works by restricting the flow of gas from the gas port in the barrel and does not vent excess gas into the atmosphere around the gas block. | 11-04-2010 |
| 20100282066 | Gas block and installation device - An improved gas block for a firearm has a first longitudinal bore for receiving a firearm barrel, the barrel having a gas port, the gas block having a second longitudinal bore for receiving a gas tube or operating element. The block includes a vertical bore aligned with the barrel gas port and connecting the first and second block bores and permitting passage of cartridge gas from the barrel gas port to the gas tube. The improved gas block may include a military rail, forward of the gas tube, the forward location permitting the rail and accessories to lie close to the barrel, improving handling and reducing bulk. The barrel may include a conical cavity generally opposite the gas port. The block may include a conical point set screw adapted to mate with the barrel conical cavity, the screw when tightened forcing alignment of the block vertical bore with the barrel gas port and simultaneously clamping the block to the barrel. An installation device provides a means for forming a conical cavity in the barrel surface. | 11-11-2010 |
| 20100319528 | GAS PLUG RETENTION AND REMOVAL DEVICE - A gas plug retention and removal device for a gas operating system of a firearm. The gas operating system can include a gas block comprising a front end, a rear end, a gas block bore defined between the front and rear ends, and at least one cam engagement surface. A gas plug can be removably received in the front end of the gas block for at least partially sealing the gas block bore, and a cam lever bail can be pivotally coupled to the gas plug and include at least one lever arm. The at least one lever arm can be pivotally connected to the gas plug, be adapted to engage the gas block, and have at least one cam lobe formed therealong. The at least one cam lobe can engage the cam engagement surface of the gas block as the cam lever bail is pivoted so as to disengage and facilitate the removal of the gas plug from the gas block to provide access to the gas block bore. | 12-23-2010 |
| 20110023699 | FIREARM WITH GAS SYSTEM ACCESSORY LATCH - A gas-operated firearm has a barrel defining a bore with a gas block defining a chamber communicating with the bore via a gas passage. A gas regulation element has a first position and a second position, and serves to provide different gas flow characteristics in the different positions. The latch element gives the user audible or tactile feedback upon installation of an accessory device when the gas regulation element is a correct position suited to use of the accessory, and not when in the other position unsuited to accessory usage. The accessory may be a sound suppressor, and the latch may serve to secure the gas regulation element against position change. The latch may engage a circular array of elements on the rear face of the suppressor, and may have an angled cam face to provide ratcheting engagement for installation, and to resist removal or loosening without deliberate actuation of the latch. | 02-03-2011 |
| 20110023700 | Receiver with operating rod bushing and kit for providing same - A receiver assembly for a firearm has an as-manufactured original equipment manufacturer (OEM) receiver body, an operating rod bushing, and an operating rod. The as-manufactured OEM receiver body has therein a bolt carrier bore and a gas tube lug receiving portion. The gas tube lug receiving portion intersects the bolt carrier bore. A gas lug bore extends through the receiver body between the gas tube lug receiving portion of the receiver body and a front face of the receiver body. The operating rod bushing is mounted within the gas lug bore of the as-manufactured OEM receiver body. The operating rod extends through a central passage of the operating rod bushing into the gas tube lug receiving portion of the as-manufactured OEM receiver body. The central passage of the operating rod bushing and the operating rod are jointly configured for limiting radial displacement of the operating rod with respect to the operating rod bushing. | 02-03-2011 |
| 20110179945 | Gas Operating Systems, Subsystems, Components and Processes - A gas operating system for a firearm includes a gas block, a barrel nut that maintains the gas block at a predetermined axial position on a barrel of the firearm, a member that is movable with respect to the gas block axially with respect to the barrel in response to pressure exerted by expanding propellant gases conveyed thereto by the gas block and a mechanical linkage receiving a force form the member urging it in an axial direction of the barrel and coupled with a loading and ejection mechanism of the firearm to convey the force thereto for operating the loading and ejection mechanism. Various embodiments of gas block assemblies and operating rods for gas operating systems for firearms are provided. | 07-28-2011 |
| 20110265640 | FIREARM HAVING AN INDIRECT GAS OPERATING SYSTEM - An automatic or semi-automatic firearm having an indirect gas operating system, the firearm having: a receiver; a bolt assembly slidably received within the receiver; a barrel having a bore, the barrel coupled to the receiver; a gas block mounted to the barrel, the gas block having a cylinder in fluid communication with the bore; a rod coupled to the cylinder and having a striking rod; wherein gas discharged from a fired cartridge displaces the rod and causes the striking rod to strike a striking surface of the bolt assembly, wherein the gas repositions the bolt assembly in bore. | 11-03-2011 |
| 20110271826 | GAS-OPERATED FIREARM - A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas cylinder of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. | 11-10-2011 |
| 20110271827 | Firearm Having Gas Piston System - A firearm having a gas piston system includes a bolt carrier, an adjustable gas piston block located forward on the firearm and an over-the-barrel spring and guide rod arrangement, all of which is housed and contained in a top rail that runs the length of the firearm and that maintains the alignment of these firearm components. The firearm also includes an ambidextrous, non-reciprocating charging handle located forward on the firearm and positioned within the top rail for charging the firearm. | 11-10-2011 |
| 20110277623 | Weapons System Construction and Modification Including Improved Gas Management System - This invention is directed to a rifle barrel having a gas port for a gas operated weapon system comprising: a forward gas redirection tube operably associated to said rifle barrel so that expelled gas from a cartridge travels out of said gas port and into said forward gas redirection tube; a rear gas connector operable associated with said forward gas redirection tube for receiving expelled gas traveling in said forward gas redirection tube; a rear gas redirection tube removeably connected to said rear gas connector for receiving expelled gas and transferring said gas to the action of the weapons system to assist with the cycling of the weapons system action; a sleeve arranged around said rifle barrel defining a void between said rifle barrel and said sleeve; and filler material carried in said void defined between said rifle barrel and said sleeve wherein said forward gas redirection tube is disposed within said filler material between said sleeve and said barrel. | 11-17-2011 |
| 20110303082 | FIREARM WITH GAS OPERATING SYSTEM - A semi-automatic or automatic rifle is provided the rifle having: a receiver having a hand guard portion; a barrel having a bore, the bore removably connected to the receiver, the hand guard portion surrounding at least a portion of the barrel; a gas block having a forward end and a rearward end aligned with the barrel; a sleeve removably secured to the forward end of the gas block; a piston slidably received within the gas block, wherein the gas block and the sleeve fluidly couple the piston to the bore of the barrel; wherein an increase in pressure in the bore of the barrel causes the piston to move away from the sleeve; and wherein the sleeve and the piston are each capable of being removed from the rifle through the forward end of the gas block without removing the gas block from the rifle. | 12-15-2011 |
| 20120017755 | Gas-Operated Firearm - A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas cylinder of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. | 01-26-2012 |
| 20120079935 | KIT AND METHOD FOR CONVERTING A GAS-OPERATED GAS-DRIVEN FIREARM TO A GAS-OPERATED OPERATING ROD DRIVEN FIREARM - A kit for modifying a bolt carrier group actuating apparatus of a firearm configured by its original manufacturer to have a gas-driven bolt carrier has a gas expansion assembly and an operating rod. The gas expansion assembly is configured for receiving combustion gases from an as-manufactured OEM gas block of a firearm and for facilitating expansion of the gases for generating a bolt carrier driving force. The operating rod is engagable between the gas expansion assembly and an operating rod engaging lug of a bolt carrier. The operating rod is configured to mechanically transmit the bolt carrier driving force to the operating rod engaging lug. | 04-05-2012 |
| 20120111183 | AUTOMATIC OR SEMI-AUTOMATIC RIFLE - A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attachment is arranged for allowing detachment and removal of the removable hand guard from the receiver without removal of fasteners. | 05-10-2012 |
| 20120137872 | FIREARM HAVING A NEW GAS OPERATING SYSTEM - M-16/AR-15 firearms modified with a new gas operating system are described. The modification of the firearm with the new gas operating system has a forward mounted gas and recoil spring system in which high pressure propellant gases from the cartridge expand in the barrel and operate the firearm. | 06-07-2012 |
| 20120152106 | FIREARM HAVING A DIRECT GAS IMPINGEMENT OPERATING SYSTEM - A direct gas impingement operating system for an automatic or semi-automatic rifle. The direct gas impingement operating system has a gas block fitted to a barrel having a bore, the gas block in communication with the bore. A gas sleeve is located in the gas block, the gas sleeve in communication with the bore through the gas block. A bolt assembly having an impingement cylinder and a gas line is fitted to the sleeve in communication with the bore through the sleeve and the gas block, the gas line further in fluid communication with the impingement cylinder. Gas discharged from a fired cartridge displaces the impingement cylinder displacing the bolt assembly. The sleeve and the gas line are removable from the gas block without removal of the gas block from the firearm. | 06-21-2012 |
| 20120167756 | Firearm barrel having multiple ports and port selector - A cartridge gas port selector mechanism for a firearm barrel having a plurality of gas ports extending from the barrel bore and having a gas block with gas passages in communication with a gas tube. A selector valve member is movable within the gas block between an open condition permitting flow of cartridge gas from one or more ports of the firearm barrel to the cartridge gas passage and a closed condition blocking flow of cartridge gas from the barrel bore to the cartridge gas passage. A valve selector or actuator is connected with the valve member and is selectively moveable to position the valve member at the open condition or the closed condition to select the volume and timing of cartridge gas communication from the barrel bore to the gas energized autoloading mechanism of the firearm. | 07-05-2012 |
| 20120167757 | Adjustable gas block for an indirect gas operated firearm - A firearm including a barrel, receiver, indirect gas system and an adjustable gas block Four positions of adjustment are provided for on the adjustable gas block, each of which provides a different setting to regulate gas flow into the host firearm's operating system. A position of adjustment is selected based on how the firearm is being used. The provided positions of adjustment are calibrated for the standard use of the host firearm, use of a silencer, use of the firearm under hard or adverse conditions or when it is necessary to increase the firearm's rate of fire, and to block the flow of gas into the operating system. The provided gas block is designed to function with an indirect gas operating system, but could be adapted for use with a direct gas impingement system as well. Excess gas from the operating system is not vented from the gas block thereby eliminating the generation of additional muzzle flash and sound. No tool is required to manipulate the adjustment mechanism of the gas block. | 07-05-2012 |
| 20120180648 | FIREARM - A firearm can have a bolt having a plurality of locking lugs that are configured to have a shear area that is at least approximately 1.3 times that of a standard M16/M4. A piston can be formed on the bolt and can have a plurality of rings that are configured to cooperate with the piston to mitigate gas leakage past the piston. Each of the rings can have a key formed thereon and a gap formed therein such that the gap of one ring is configured to receive at least a portion of the key of another ring. The bolt carrier can have a double cut cam. | 07-19-2012 |
| 20120279385 | Gas operating system for a firearm - A gas operating system for a firearm has an energy transmission facility and a gun barrel having a lateral aperture. The energy transmission facility and the lateral aperture have gas communication between them. The gun barrel and the energy transmission facility are mechanically decoupled such that the energy transmission facility does not impede flexing of the gun barrel. All forward forces generated by the energy transmission facility may be transferred from the energy transmission facility to a self-loading facility. The energy transmission facility may include a gas block having a sleeve that is slidably disposed on the gun barrel. The energy transmission facility may include a gas block and a tubular body extending from a receiver to the gas block, one end of the tubular body being slidably received in the gas block. The energy transmission facility may also include the tubular body receiving a gas piston. | 11-08-2012 |
| 20120325079 | Sports or Defence Rifle With Container Pipe for Cartridges - A cap group of a container pipe of a rifle comprises a manually removable closure latch having a main body, an engagement element, a spring and a socket. The group further comprises a cam profile joined to the container pipe, having a housing seat for the stable and manually reversible reception of the engagement element. | 12-27-2012 |
| 20130025445 | Pressure-Regulating Gas Block - A gas block assembly for a firearm comprises a gas cylinder fluidly coupled to the bore of a barrel of the firearm through a gas inlet port, and an automatically adjusting gas pressure relief port. The gas cylinder receives a gas pressure generated in the barrel of the firearm, and the gas pressure relief port vents gas pressure in the gas cylinder directly or indirectly into the bore of the barrel of the firearm or attached sound suppressor if the gas pressure in the gas cylinder is greater than or equal to a predetermined and preset gas pressure. A pressure relief mechanism is fluidly coupled between the gas cylinder and the gas pressure relief port and vents gas pressure from the gas cylinder to the gas pressure relief port if the gas pressure in the gas cylinder is greater than or equal to the predetermined gas pressure. | 01-31-2013 |
| 20130036901 | WEAPONS SYSTEM CONSTRUCTION AND MODIFICATION INCLUDING IMPROVED GAS MANAGEMENT SYSTEM - This invention is directed to a rifle barrel having a gas port for a gas operated weapon system comprising: an inner barrel; a gas redirection tube operably associated to the inner barrel so that expelled gas from a cartridge travels out of the gas port and into the gas redirection tube; a sleeve arranged around the inner rifle barrel defining a void between the rifle barrel and the sleeve surrounding the rifle barrel; and, filler material carried in the void defined between the inner barrel and the sleeve wherein the gas redirection tube is disposed within the filler material between the sleeve and the inner barrel. | 02-14-2013 |
| 20130036902 | WEAPONS SYSTEM CONSTRUCTION AND MODIFICATION INCLUDING IMPROVED GAS MANAGEMENT SYSTEM - This invention is directed to a rifle barrel sleeve system for a gas operated weapon system comprising: a rear sleeve surrounding a rear portion of the rifle barrel; a front sleeve surrounding a front portion of the rifle barrel; a gas elbow support surrounding the rifle barrel disposed between the rear sleeve and the front sleeve having a gas chamber allowing gas to escape from a barrel gas port into the gas elbow; and, a void defined between the rear sleeve, front sleeve, gas elbow and barrel having filler material. | 02-14-2013 |
| 20130055883 | MULTI-BLOCK GAS REGULATOR - A multi use retro fit capable adjustable gas block designed to interface with an autoloading gas operated firearm is provided to replace existing gas blocks. The adjustable gas block optimizes gas flow into the host firearms operating system. The adjustable gas block has a spring loaded adjustment knob that releases when pulled forward allowing it to rotate. By rotating the adjustment knob the gas flow is increased or decreased based on one of four provided gas settings. Setting one is optimal for using a silencer, setting two is optimal for normal operations, setting three is optimal for adverse conditions, and setting four either turns the gas flow off optimizing sound reduction and providing for manual operation, or provides an extra high gas setting for the host firearm. The system works by precisely metering gas entering the operating system and not by exhausting excess gas into the atmosphere. The adjustable gas regulator may be configured with a piston operating system or a direct gas impingement operating system, e.g. gas tube, as is the case with the standard AR-15/AR-10 family of firearms. | 03-07-2013 |
| 20130068089 | FIREARM HAVING AN INDIRECT GAS IMPINGEMENT SYSTEM - A firearm including a barrel having a breech and a muzzle defining a length of the barrel is disclosed. The firearm includes a hand guard having a first end and a second end with a front sight is attached to at least one of the barrel adjacent the muzzle and the second end of the hand guard. A housing is coupled to the front sight and defines a chamber having a piston disposed therein and movable between static and displaced positions. A receiver is coupled to the first end and a bolt carrier is disposed within the receiver and moveable between firing and rearward positions. A carrier key is attached to the bolt carrier and moves concurrently with the bolt carrier and a rod is permanently affixed to the carrier key and extends to a distal end with the piston engaging the distal end when moving to the displaced position. | 03-21-2013 |
| 20130098235 | Adjustable Gas Block - An adjustable gas block designed to interface with the gas-operating system of an auto-loading firearm. This design provides continuously adjustable gas flow, from fully closed to fully open, in small, discrete, uniform, and fully-repeatable increments. | 04-25-2013 |
| 20130174721 | GAS REGULATOR FOR A FIREARM AND FIREARM WITH GAS REGULATOR - A gas regulator for a rifle is provided, the gas regulator having: an elongated member having a first end and a second end; a head portion located at the first end; a pair of openings passing through the elongated member, wherein one of the pair of openings is larger than the other one of the pair of openings; and a recessed area located at the second end. | 07-11-2013 |
| 20130269510 | Gas Regulator System - A gas regulator block can be configured to mount to a barrel of a firearm. A gas regulator can be disposed substantially within the gas regulator block and can be configured to adjustably vary an amount of gas flow through the gas regulator block. A cover configured to cover a portion of the gas regulator block to inhibit inadvertent adjustment of the amount of gas flow and configured to uncover the portion of the gas regulator block to facilitate intentional adjustment of the amount of gas flow. A gas passage can be formed in the gas regulator block in a forward location and the gas port can be configured to communicate gas from the barrel to the gas regulator. | 10-17-2013 |
| 20130276624 | FIREARM HAVING A NEW GAS OPERATING SYSTEM - A method of operating a firearm having a modified gas operating system including directing gas from a barrel of a firearm upward through a barrel gas port, routing the gas from the barrel gas port through a gas jet, directing the gas from the gas jet through a gas operation tube, and directing the gas to a bolt carrier assembly to move at least a portion of the bolt carrier assembly relative to the barrel, the movement of the at least a portion of the bolt carrier assembly to cause excess gas in the barrel to be vented through the gas jet. | 10-24-2013 |
| 20130284008 | COMBINED DIRECT DRIVE GAS PISTON SYSTEM, AND FRONTAL, AMBIDEXTROUS, NON RECIPROCATING, CHARGING SYSTEM FOR AUTOLOADING RIFLE - A combined retrofit direct drive gas piston system, for use with M-16 rifle and other appropriated platforms, operating in conjunction with a frontal actuated, ambidextrous, non reciprocating charging system, working in tandem with other existing charging handle systems. The device, conceived to be installed in said rifles in an effortless manner by coupling supporting components with the receiver and the barrel without performing any machining operations. The artifact partially comprises affixing supports, a structural tube to constrain and hold the components, a securing frontal gas block, a regulated direct gas piston system including an independent push bar with alignment rings, springs, and freely displacing part with projections connecting with the exterior handle or hand guard actuator. By enabling to use the extended firer's supporting hand for charging, said artifact solves complicated ergonomic maneuvers required to charge the original M-16. Also eliminates problems of the original gas impingement system. | 10-31-2013 |
| 20140060312 | GAS PISTON CONTROL SYSTEM FOR A FIREARM - A gas system for a firearm having a gas block coupled to a barrel with a gas capture port in communication with a barrel gas port. A sleeve removeably mounted inside the gas block has: a gas conduit; a seat near the gas conduit; a projection; and a rod conduit communicating gas through the projection. A rod movably mounted in the gas block has a cup fitting over the projection. | 03-06-2014 |
| 20140060313 | GAS OPERATING SYSTEMS, SUBSYSTEMS, COMPONENTS AND PROCESSES - A gas operating system for a firearm includes a gas block, a barrel nut that maintains the gas block at a predetermined axial position on a barrel of the firearm, a member that is movable with respect to the gas block axially with respect to the barrel in response to pressure exerted by expanding propellant gases conveyed thereto by the gas block and a mechanical linkage receiving a force form the member urging it in an axial direction of the barrel and coupled with a loading and ejection mechanism of the firearm to convey the force thereto for operating the loading and ejection mechanism. Various embodiments of gas block assemblies and operating rods for gas operating systems for firearms are provided. | 03-06-2014 |
| 20140076150 | ADJUSTABLE GAS SYSTEM FOR FIREARMS - This application discloses a firearm gas system that includes a gas block that defines a gas port and a passage that receives a gas tube and an orifice plate that defines at least two orifices, where the orifice plate is positioned between a gas port in the barrel and the gas port on the gas block and where the orifice plate is movable with respect to the gas ports in the barrel and gas block to selectively position one of the orifices between the gas ports in the barrel and gas block where the orifices in the orifice plate have different orifice sizes. | 03-20-2014 |
| 20140076151 | GAS PISTON SYSTEM FOR M16/AR15 RIFLE OR M4 CARBINE SYSTEMS - A gas piston system for a firearm includes a gas block having a port in communication with the barrel port and an exhaust tube. The exhaust tube has: a head at least partially disposed in the gas block and having a port in fluid communication with the gas block port; a body extending from the head toward a muzzle of the firearm; and a channel extending from the exhaust tube port through the body. The gas piston system further includes a driver movable relative to the gas block between a forward and rearward position and having: a piston slidable along the gas block; a stinger closing the channel in the forward position and opening the channel in the rearward position, and an operating rod operable to push the bolt carrier assembly away from the barrel. | 03-20-2014 |
| 20140076152 | FIREARM WITH GAS OPERATING SYSTEM - An indirect gas operating system for a semi-automatic or automatic rifle is provided, the indirect gas operating system having: a gas block secured to the rifle; a barrel secured to the rifle; a bolt carrier slidably received within a receiver of the rifle; a means for moving the bolt carrier within the receiver using gases discharged into a bore of the barrel of the rifle, wherein the means for moving is removably secured to the gas block such that the means for moving can be removed from the rifle through a forward end of the gas block without removing the gas block from the rifle; and an externally threaded barrel nut for securing the barrel to the receiver. | 03-20-2014 |
| 20140083286 | ADJUSTABLE GAS BLOCK FOR A GAS OPERATED FIREARM - An adjustable gas block for a gas operated firearm offering a means to adjust a volume of gas directed to the host rifle's operating system. The adjustable gas block provides two positions of adjustment that are selectable based on the presence of a pressure increasing device being mounted on the firearm. A first position provides an optimal volume of gas into the gas operating system absent a back pressure increasing device. A second position usable in the presence of a back pressure increasing device causing venting of a portion of the volume of gas into a secondary chamber prior to release into the atmosphere. The amount of gas received by the operating system due to venting is reduced to a volume that is substantially equal to the volume of gas that would be received by the operating system absent a back pressure increasing device. | 03-27-2014 |
| 20140090550 | TOOL-LESS VARIABLE GAS BLOCK - An adjustable gas block is provided enabling variable adjustment of the amount of gas return. The adjustment knob is provided at a non-perpendicular/non-parallel angle to the firearm barrel enabling manual adjustment and without requiring tools to perform the adjustment, thereby providing a gas block that can variably adjust the amount of gas entering the gas tube. | 04-03-2014 |
| 20140137730 | MANOEUVRES CARTRIDGE DEVICE AND SELF-LOADING FIREARM SUITABLE THEREFOR - A maneuver cartridge device for use in a self-loading firearm includes a barrel extending from a chamber to a muzzle side and having an intercepting device arranged on the muzzle side for intercepting a projectile. The barrel has a first barrel section that adjoins the chamber and a second barrel section that adjoins the first barrel section. The first barrel section has a first cross section corresponding to a caliber of the projectile and the second barrel section has a second cross section that is larger than the first cross section. | 05-22-2014 |
| 20140144314 | Firearm Operating System - A firearm operating system for self-loading firearms includes a bolt body having a forward bolt bearing, a piston and an aft bolt bearing arranged around the bolt body; a bolt carrier slidingly receiving the bolt body in a longitudinally-oriented cylinder, the cylinder extending from a forward end of the bolt carrier into the bolt carrier a predetermined distance, the bolt carrier having a tubular aft carrier bearing, wherein the bolt is slidingly captured in the cylinder of the bolt carrier and borne on the two bearings of the bolt body, wherein the forward bearing of the bolt body is borne on the cylinder of the bolt carrier, wherein the aft bearing of the bolt body is borne on the aft bolt carrier bearing, wherein a gap is formed between the piston and the cylinder, and wherein the piston and the cylinder do not contact each other. | 05-29-2014 |
| 20140150638 | GAS-OPERATED FIREARM WITH PRESSURE COMPENSATING GAS PISTON - A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas block of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. Additionally, the gas operating system includes compensating gas pistons with internal relief valves that can bleed off excess gas to compensate for larger shot loads regardless of the size of the cartridge. | 06-05-2014 |
| 20140150639 | AUTOMATIC WEAPON MAGAZINE, CHARGING HANDLE, BOLT CARRIER, BOLT CATCH, SCOPE, AND BOLT FEATURES AND METHODS OF OPERATION - A magazine well for a firearm having an angled spine receiving portion. A charging handle for a firearm having latch that extends below a bottom surface of a crossbar. A bolt carrier for a firearm having a pair of vent holes disposed in the indented portion and at least one additional vent hole on indented portion adjacent to the pair of vent holes. A bolt catch for a firearm having a receiving portion curved to match the contours of a human thumb. A scope assembly for a firearm having markers on a scope and amount that correspond to the same radial positions. A bolt for a firearm having a plurality of ribs disposed on a main body and extending from a front end toward a tail portion of the bolt. | 06-05-2014 |
| 20140182450 | Gas Management System For A Firearm - A gas management system for a firearm has a body including an end and having a plurality of apertures that communicate with a central body bore and a sleeve that closely receives the end of the body. One of the body apertures communicates with a barrel aperture that communicates with a barrel bore. One of the body apertures is a forward aperture that is continuously exposed an exhausts gas to the environment as the sleeve reciprocates between a forward position and a rearward position as the firearm cycles. One of the body apertures may be a rearward aperture that is not continuously exposed and only exhausts gas to the environment when the sleeve uncovers the rearward aperture as the sleeve moves to the rearward position. | 07-03-2014 |
| 20140190344 | SELF REGULATING GAS SYSTEM FOR SUPPRESSED WEAPONS - A gas system for an autoloading firearm wherein the gas used to cycle the weapon can be restricted automatically through a mechanical shutoff actuated by the installation of a suppressor on the weapon. The gas system could be used to actuate either a piston to mechanically operate the weapon or a gas impingement mechanism wherein the gas is redirected into the bolt carrier assembly to directly actuate the unlocking and cycling of the bolt and bolt carrier group. A gas block for the firearm includes a spring-loaded plunger assembly positioned within a bore of the gas block and oriented parallel to a bore of a barrel of the firearm, the plunger assembly including a regulator plunger, a regulator bushing, a regulator spring, and a regulator cap. Mounting a suppressor over the muzzle depresses the regulator plunger driving it rearward, the rearward movement of the regulator plunger blocking one of gas ports in the gas block to automatically reduce the volume of propellant gases directed into the gas system. | 07-10-2014 |
| 20140190345 | Suppressor Assembly for a Firearm - A suppressor assembly for a firearm is disclosed herein. The firearm may include a barrel, a bore, and a muzzle end. The suppressor assembly may include a gas block mount positioned about the barrel. The suppressor assembly also may include an outer tube comprising a first end and a second end. The first end of the outer tube may be configured to be attached to the gas block mount, and the second end of the outer tube may be configured to extend beyond the muzzle end of the firearm. Moreover, the suppressor assembly may include a baffle comprising a first end and a second end. The second end of the baffle may be configured to be attached to and positioned within the second end of the outer tube. | 07-10-2014 |
| 20140196599 | AUTO REGULATING GAS SYSTEM FOR SUPRESSED WEAPONS - An auto regulating gas system to automatically regulate the operating speed of an auto loading weapon having a gas operating system by restricting the gas flow from the firing of a projectile. A gas block attached to the barrel or the weapon redirects a volume of propellant gases to cycle the weapon, the gas block including a gas port for directing propellant gases received from the a gas port of the barrel into the gas system. A spring-loaded plunger assembly is positioned within the gas block, the plunger assembly including a regulator plunger having a reduced flow orifice, a regulator bushing, a regulator spring, and a regulator cap, wherein the position of the regulator plunger within the gas block automatically controls an amount of gas that is allowed to enter the gas system. A mechanical backup linkage assembly is attached to the gas block as a backup device for returning the regulator plunger to a forward position in the gas block when a muzzle device mounted on a muzzle of the firearm is removed. | 07-17-2014 |
| 20140260947 | ADJUSTABLE GAS BLOCK FOR AN INDIRECT GAS OPERATED FIREARM - A firearm including a barrel, receiver, indirect gas system and an adjustable gas block designed to interface with the indirect gas system is provided. Four indexable positions of adjustment are provided for on the adjustable gas block. Positions of adjustment are selected based on the use of a silencer, use of under-powered ammunition, the presence of un-burnt powder and debris in the host firearms operating system, or if the weapon is being fired under “ideal” circumstances. The provided gas block is designed to function with an indirect gas operating system. Excess gas from the operating system is not vented from the gas block thereby generating excess flash and sound. No tool is required to manipulate the adjustment mechanism of the gas. | 09-18-2014 |
| 20140305297 | Gas Flow System for a Long-Barrel Firearm - A gas cycling firearm comprising a barrel having a breech end, a muzzle end, an inner surface defining a bore having a bore axis, and an outer surface, wherein the muzzle end is spaced a length L from the breech end, the barrel further having a port providing a fluid path between the bore and the outer surface, the port having an axis that intersects the bore axis at a position P from the muzzle end, where P is less than or equal to ⅓ L; and a gas flowpath extending between the gas port and the piston system, the gas flowpath having a length G and a volume V, wherein G is greater than ⅓ L. | 10-16-2014 |
| 20140318361 | CARTRIDGE GAS ACTUATED FIREARM HAVING BOLT CARRIER/GAS KEY SEAL - A cartridge gas energized firearm mechanism has a receiver assembly having upper and lower receivers. A bolt carrier is moveable within the upper receiver and has a wall structure having a planar gas key seat surface intersected by a gas port. A gas key is mounted to the bolt carrier and has a planar gas key surface in face-to-face seating engagement with the planar gas key seat surface of the bolt carrier, thus establishing a planar surface interface. The gas key has a cartridge gas supply passage in gas communication with the gas port. A tubular seal member is positioned in sealing engagement within seal receptacles of the bolt carrier and gas key and prevents cartridge gas leakage through the planar surface interface. | 10-30-2014 |
| 20140318362 | AUTOMATIC OR SEMI-AUTOMATIC RIFLE - A rifle having a receiver with an integral hand guard and a barrel. The barrel is connected to the receiver. The hand guard extends over and surrounds the barrel. A removable hand guard is attached to the receiver by an attachment that stably holds the removable hand guard to the receiver. The attachment is arranged for allowing detachment and removal of the removable hand guard from the receiver without removal of fasteners. | 10-30-2014 |
| 20150007712 | Firearm Having Gas Piston System - A firearm having a gas piston system includes a bolt carrier, an adjustable gas piston block located forward on the firearm and an over-the-barrel spring and guide rod arrangement, all of which is housed and contained in a top rail that runs the length of the firearm and that maintains the alignment of these firearm components. The firearm also includes an ambidextrous, non-reciprocating charging handle located forward on the firearm and positioned within the top rail for charging the firearm. | 01-08-2015 |
| 20150292825 | SUPER & SUBSONIC GAS REGULATOR ASSEMBLY - A retro fit capable super & subsonic gas regulator assembly designed to interface with an auto-loading gas operated host firearm is provided to replace existing gas systems. The gas regulator assembly optimizes gas flow into the host firearm's operating system. The gas regulator has a spring actuated gas regulator and cross-pin including a flat that disengages with the gas regulator when the gas regulator is rotated to allow the gas flow to be set to one of a plurality of gas settings e.g., four. In embodiments, setting one is optimal for using supersonic ammunition with a silencer, setting two is optimal for using supersonic ammunition without a silencer, setting three is optimal for subsonic ammunition, and setting four turns the gas flow off optimizing sound reduction and providing for manual operation of the host firearm. The system works by precisely metering gas entering the operating system and not by exhausting excess gas into the atmosphere. The super & subsonic gas regulator assembly provides optimal performance with both subsonic and supersonic ammunition in a single firearm allowing the operator full advantage. | 10-15-2015 |
| 20150308764 | SELF REGULATING GAS SYSTEM FOR SUPPRESSED WEAPONS - A gas system for an autoloading firearm wherein the gas used to cycle the weapon can be restricted automatically through a mechanical shutoff actuated by the installation of a suppressor on the weapon. The gas system could be used to actuate either a piston to mechanically operate the weapon or a gas impingement mechanism wherein the gas is redirected into the bolt carrier assembly to directly actuate the unlocking and cycling of the bolt and bolt carrier group. A gas block for the firearm includes a spring-loaded plunger assembly positioned within a bore of the gas block and oriented parallel to a bore of a barrel of the firearm, the plunger assembly including a regulator plunger, a regulator bushing, a regulator spring, and a regulator cap. Mounting a suppressor over the muzzle depresses the regulator plunger driving it rearward, the rearward movement of the regulator plunger blocking one of gas ports in the gas block to automatically reduce the volume of propellant gases directed into the gas system. | 10-29-2015 |
| 20150323268 | 6.8MM SPC CONVERSION KIT FOR DOD DESIGNATION M249, MK46, MK48, MGA SAW, AND FN MINIMI - Implementations of the present invention relate to apparatuses, systems, and methods for converting an M249-platform firearm to allow the use of 6.8 mm SPC ammunition therein. The conversion kit comprises an adapted barrel, barrel extension, gas port, and bolt, which are each configured to allow rapid reconfiguration of the firearm between calibers. | 11-12-2015 |
| 20150323270 | Gas Systems For Firearms - Provided in one aspect is an annular gas ring within or adjacent a barrel to increase the efficient transfer of pressurized gas to one or more gas ports, which may communicate the high-pressure gas to a piston to cycle the action of the firearm. Provided in another aspect are gas ports may adjacent the chamber, which may communicate pressurized gas from near the chamber to distally-extending gas tubes that communicate the pressurized gas to a distally located piston to cycle the action. A modular gas system is provided comprising a coupler that couples a barrel with a chamber and forms there-between an annular gas ring with ports that communicate pressurized gas to separate longitudinally-extending cylindrical gas tubes that feed into a gas block that supports the barrel and forms the cylinder for the piston. | 11-12-2015 |
| 20150330729 | WEAPONS SYSTEM MODIFICATION FOR IMPROVED PISTON SYSTEM - This invention is directed to a rifle barrel sleeve system for a piston operated weapon system comprising: a rear sleeve surrounding a rear portion of the rifle barrel; a front sleeve surrounding a front portion of the rifle barrel; a gas elbow support surrounding the rifle barrel disposed between the rear sleeve and the front sleeve having a gas chamber allowing gas to escape from a barrel gas port into the gas elbow; and, a void defined between the rear sleeve, front sleeve, gas elbow, barrel having filler material, a cylinder attached to a chamber bushing, sizing member and piston and rod. | 11-19-2015 |
| 20160003566 | GAS OPERATING SYSTEM FOR SMALL ARMS WITH SPRING LOADED GAS VALVE - A gas operating system for engaging the automatic or semi-automatic action of small arms. The system has a short, displaceable cylinder with a gas block ring secured thereto, a short, fixed piston attached coaxially to a gun barrel, and a single locking nut, advantageously in the form of a threaded flash suppressor. The piston includes gas block rings at its rearward exterior surfaces. The cylinder has a short stroke between radial forward and rear stops fixed on the barrel, which short stroke may be finely adjusted by threaded axial displacement of the rear stop. Pressurized combustion gas from fired ammunition fills a gas chamber formed by the interiors of the piston and cylinder, the gas entering through radial ports in the barrel. The system may be machined and assembled/disassembled with ease and may be readily adapted for employment in any small arms. The system may be fine tuned for usage with a wide spectrum of ammunition. | 01-07-2016 |
| 20160010932 | GAS-OPERATED FIREARM | 01-14-2016 |
| 20160084597 | GAS-OPERATED FIREARM WITH PRESSURE COMPENSATING GAS PISTON - A gas operating system for a firearm renders the firearm capable of firing a wide range of shot loads by passively or automatically compensating for different shot loads. The firearm includes a plurality of ports formed in the firearm barrel, and corresponding ports formed in a gas block of the gas operating system. The ports tap gases generated during firing which are used to cycle the firearm. When firing different cartridge loads, differing combinations of the ports are selectively at least partially blocked or otherwise obstructed by the cartridge casing according to the size of the cartridge. Additionally, the gas operating system includes compensating gas pistons with internal relief valves that can bleed off excess gas to compensate for larger shot loads regardless of the size of the cartridge. | 03-24-2016 |
| 20160084598 | ADJUSTABLE GAS BLOCK FOR A GAS OPERATED FIREARM - An adjustable gas block for a gas operated firearm is provided that offers the user a means by which the volume of gas being directed to the host rifle's operating system can be adjusted. The adjustable gas block provides two positions of adjustment, with the position of use being selected based on whether or not a back pressure increasing device, such as a noise suppressor or a silencer, is mounted on the firearm. A first position provides the optimal volume of gas into the gas operating system for it to operate properly based on its factory configuration and in the absence of a back pressure increasing device. A second position is available for use when the back pressure is increased due to the presence of a back pressure increasing device. The second position exposes a port through which a portion of the volume of gas from the barrel is vented into a secondary chamber prior to being released into the atmosphere. By venting a portion of the gas into a secondary chamber, the amount of gas received by the operating system is reduced to a volume that is substantially equal to the volume of gas that would be received by the operating system in the absence of a back pressure increasing device. No tools are required to select either of the positions provided by the gas block. | 03-24-2016 |
| 20160109200 | ADJUSTABLE GAS BLOCK FOR AN INDIRECT GAS OPERATED FIREARM - A firearm including a barrel, receiver, indirect gas system and an adjustable gas block designed to interface with the indirect gas system is provided. Four indexable positions of adjustment are provided for on the adjustable gas block. Positions of adjustment are selected based on the use of a silencer, use of under-powered ammunition, the presence of un-burnt powder and debris in the host firearms operating system, or if the weapon is being fired under “ideal” circumstances. The provided gas block is designed to function with an indirect gas operating system. Excess gas from the operating system is not vented from the gas block thereby generating excess flash and sound. No tool is required to manipulate the adjustment mechanism of the gas. | 04-21-2016 |
| 20160161200 | GAS BLOCK BALANCING PISTON FOR AUTO-LOADING FIREARM - A gas block assembly for a firearm comprises a cylinder chamber fluidly coupled to the bore of a barrel of the firearm through a gas inlet port. A spool-type balancing piston is disposed for reciprocation within the cylinder chamber between gas transmitting and bypass positions. A spring stack acts on the balancing piston to bias same toward the gas transmitting position. The gas cylinder receives a gas pressure from the barrel when a projectile is fired. When the pressure exceeds a predetermined threshold, the gas block assembly vents the excess gas pressure either into the barrel of the firearm or to atmosphere or into an associated sound suppressor. The balancing piston is designed with a counter-balance chamber. Gas pressure routed into the counter-balance chamber works in conjunction with the spring stack to urge the balancing piston toward its gas transmitting position. | 06-09-2016 |
| 20160178299 | MULTI-BLOCK GAS REGULATOR | 06-23-2016 |
| 20160178308 | SYSTEMS AND METHODS FOR PROVIDING A SEAL BETWEEN A BOLT CARRIER AND A BOLT CARRIER GAS KEY OF A FIREARM | 06-23-2016 |
| 20160202006 | REGULATOR FOR A FIREARM AUTO LOADER | 07-14-2016 |
| 20160202012 | BARREL WITH INTEGRATED GAS CHANNEL | 07-14-2016 |
| 20170234634 | GAS OPERATING SYSTEM FOR AN AUTOMATIC PISTOL-CALIBER FIREARM | 08-17-2017 |
