PISTOL / CARBINE AUTOLOADER

Abstract

A firearm comprises a frame defining a bolt passage, with a reciprocating bolt received in the passage. The frame defines a magazine well, and a top cover having a forward end pivotally connected to the frame and defining an upper portion of the bolt passage.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application claims the benefit of U.S. Provisional Patent Application No. 63/007,183, filed on Apr. 8, 2020, entitled "M20 Autoloader", which is hereby incorporated by reference in its entirety for all that is taught and disclosed therein.

FIELD OF THE INVENTION

[0002] The present invention relates to autoloaders for pistols or carbines.

BACKGROUND AND SUMMARY

[0003] Autoloaders may suffer from overcomplicated designs that require specialty equipment to manufacture.

[0004] The preferred embodiment addresses these concerns by providing a firearm that comprises a frame defining a bolt passage, with a reciprocating bolt received in the passage. The frame defines a magazine well, and a top cover having a forward end pivotally connected to the frame and defining an upper portion of the bolt passage.

BRIEF DESCRIPTION OF THE DRAWINGS

[0005] FIG. 1 shows a side view of the new M20.

[0006] FIG. 1A shows the lid open with the fire pin locked.

[0007] FIG. 1B shows the lid closed with the fire pin unlocked.

[0008] FIG. 1C shows the push button release in the upper lid cover.

[0009] FIG. 2A shows the lid open with the pins up and fire pin locked.

[0010] FIG. 2B shows that the lid down disengages the fire pin lock.

[0011] FIG. 2C shows the lid down and the fire pin unlocked.

[0012] FIG. 2D shows the disassembled fire pin and lock mechanism.

[0013] FIG. 2E shows the fire pin unlocked.

[0014] FIG. 2F shows in the locked position.

[0015] FIG. 2G shows the fire pin and lock out of the bolt.

[0016] FIG. 2H shows the fire pin with the return spring out of the bolt.

[0017] FIG. 3A shows the controlled feed extractor as big as the cartridge 3/8 inch.

[0018] FIG. 3B shows the cartridge is owned by the extractor

[0019] FIG. 3C shows the large extractor has pushed cartridge over to the opposite side, locking it into an undercut secondary extractor.

[0020] FIG. 3D shows a different angle that shows full engagement of the cartridge.

[0021] FIG. 3E shows the extractor with machine angles and radius to allow cartridge to slide up underneath it.

[0022] FIG. 3F shows the secondary extractor machined slot that cartridge is pushed into from large controlled feed extractor opposite side.

[0023] FIG. 4A shows secondary extractor machined under cut opposite controlled feed extractor.

[0024] FIG. 4B shows cartridge is definitely engaged on two sides and controlled. It ensures ejection once hitting the fixed ejector.

[0025] FIG. 5 shows the fixed ejector is bolted into receiver with 2 ea. SHCS bolts.

[0026] FIG. 6A shows a 3-piece construction charging handle.

[0027] FIG. 6B shows how the handle locks into slot from both sides with 2 #10 SHCS bolts.

[0028] FIG. 6C shows where the handle engages the bolt at the front.

[0029] FIG. 7A shows the barrel nut tightened with different barrel.

[0030] FIG. 7B shows the barrel nut removed quick change out barrel.

[0031] FIG. 8 shows the very unique square appearance with machine gun lid that snaps into place.

[0032] FIG. 9A show a carbine/rifle configuration.

[0033] FIG. 9B shows a pistol configuration.

[0034] FIG. 10A shows the inclusion of a 21 round 9 mm Glock magazine.

[0035] FIG. 10B shows one-piece sights and Glock magazine

[0036] FIG. 11A shows SKS spring out.

[0037] FIG. 11B shows SKS spring in.

[0038] FIG. 12 shows an illustrated exploded version in sideview.

[0039] FIG. 13 shows top view of one configuration.

[0040] FIG. 14 shows an angled side view from above.

[0041] FIG. 15 shows rear angled side view of one configuration.

[0042] FIG. 16 shows side view of one configuration.

[0043] FIG. 17 shows side view of one configuration.

[0044] FIG. 18 shows side view of one configuration.

DETAILED DESCRIPTION OF A PREFERRED EMBODIMENT

[0045] Lid: The top of the receiver opens up like a machine gun/with pivoting lid and quick release button. In the Lid are Machined on Iron Sights.

[0046] Lock: Fire pin Lock, if receiver lid is open the fire pin lock engages the firing pin and blocks/stops it from being able to go forward and fire a round if the lid is open and trigger is pulled.

[0047] Extractor: Extractor is as big as cartridge and the cartridges slide underneath it as they are being loaded referred to as controlled feed--the bolt always has possession of the cartridge throughout the cycle of the process of feeding, firing and ejection.

[0048] Second Extractor: Opposite side of big extractor is a machined in extractor ledge that serves as a second extractor, in other words the bolt has 2 extractors.

[0049] Ejector: Fixed ejector that also serves as magazine stop, keeps magazine from being pushed in too far.

[0050] Charge Handle: Left side cocking or clearing of the M20, handle does not move whilst firing it is stationary. Considered mil spec.

[0051] Quick Change Barrel: Barrel changes out quickly with large front barrel retaining nut, it's 2-inch diameter is easy to hold onto whilst firing and is a very unique look I have used on over 3500 rifle builds.

[0052] Looks: The design is very unique in looks, very square and heavy duty using a square bolt and unique flip up top cover and big barrel retaining nut.

[0053] Multi Use: The M20 is sold as a pistol or a carbine because of quick change barrels and the easily installed rear folding stock adapter.

[0054] Magazines: Built to take Glock magazines which are available in 10-100 round capacity.

[0055] Caliber: Originally designed to shoot 9 mm; however, it is easily adaptable to take several pistol/carbine calibers including but not limited to 40 SW thru 45 ACP.

[0056] Recoil Spring: Uses a SKS recoil spring mounted in square bolt. The M20 does not need a recoil tube to function, spring is retained in bolt and upper receiver. Makes for a very small footprint for a pistol configuration.

[0057] The following is a further breakdown of the above-referenced individual parts of the new M20.

[0058] No. 1: Lid/Top Cover. A lid (top cover) pivots open to the front like a machine gun. The lid has a quick detach latch that snaps over the latch on a receiver. There is a heat-treated steel plate in the lid for wear of fire pin lock pins that are spring loaded.

[0059] No. 2 Lock Fire Pin Lock. Lock: Fire pin lock, if receiver lid is open the fire pin lock engages the firing pin and blocks/Stops it from being able to go forward and fire a round if the lid is open and trigger is pulled.

[0060] No. 3 Extractor/Controlled Feed. Controlled feed extractor is as big as cartridge/the cartridges slide underneath it as they are being loaded referred to as controlled feed--the bolt always has possession of the cartridge throughout the cycle of the process of feeding, firing and ejection. Only a few bolt action rifles use or have used this feature. M20 is a semi-automatic.

[0061] Most weapons like M20 use a push feed to push the cartridge from the magazine and then the extractor snaps over the lip of the cart. Most weapons in these calibers only use a 0.125 wide extractor.

[0062] No. 4 Secondary extractor/Makes a twin extractor system

[0063] Second extractor: Opposite side of big extractor is a machined in extractor ledge that serves as a second extractor, in other words the bolt has 2 extractors

[0064] Secondary extractor--opposite large controlled feed extractor.

[0065] A very small 0.060.times.0.015 slot opposite controlled feed extractor.

[0066] As the cartridge feeds into the chamber area, it is forced to snap underneath from the spring-loaded controlled feed extractor.

[0067] Once the cartridge is in both extractors, ifs like one piece. Very stuck and takes quite a bit of force to eject it.

[0068] No. 5 Fixed ejector. Fixed ejector that also serves as magazine stop, keeps magazine from being pushed in too far. A slot in the bolt allows bolt to slide past ejector.

[0069] No. 6 Charge handle. Left side cocking or clearing of the M20, handle does not move whilst firing it is stationary. Considered mil spec.

[0070] This feature is found on many military type rifles.

[0071] Even an AR 15 uses a charging handle that does not move while firing.

[0072] On the M20 it is put together in 3 pieces with a ball detent lock to keep handle forward and stationary whilst firing.

[0073] No. 7 Quick change barrel. Barrel changes out quickly with large front barrel retaining nut, it's 2-inch diameter is easy to hold onto whilst firing and is a very unique look I have used on over 3500 rifle builds. For convenience as well as military application when a barrel is burnt up from rapid automatic fire

[0074] No. 8 Appearance. The design has a unique visual appeal. With a military and industrial feel using a very square look and heavy-duty design consisting of: a square receiver, a square bolt, unique flip up top machine gun cover, big barrel retaining nut and one-piece sight machined in. The M20 needs no tools to pull bolt out for cleaning. The flip up lid is machined with a one-piece conventional sight.

[0075] No. 9 Multi Use. The M20 is sold as a pistol or a carbine because of quick change barrels and the easily installed rear folding stock adapter.

[0076] No. 10 Magazines. Built to take Glock magazines which are available in 10-100 round capacity.

[0077] Caliber. Originally designed to shoot 9 mm; however, it is easily adaptable to take several pistol/carbine calibers including but not limited to 40 SW thru 45 ACP.

[0078] We used Glock magazines because of the wide variety caliber and capacity available.

[0079] No. 11 Recoil Spring. Uses a SKS recoil spring mounted in square bolt. The M20 does not need a recoil tube to function, spring is retained in bolt and upper receiver. Makes for a very small footprint for a pistol configuration. A unique and simple solution for a self-contained bolt and spring. Readily available SKS spring. Eliminated need for a buffer tube/rear stock.

[0080] The M20 was designed around the AR15/M16 trigger/safety system.

[0081] The design is so simple, well thought out and easy to manufacture, there's a potential for small gun machine shops that will want to copy the M20. Hence the reason for this patent.

[0082] The M20 can be made fast and cheap, and the price point is correct to make lots of sales and profit.

Claims

1. A firearm comprising: a frame defining a bolt passage; a reciprocating bolt received in the passage; the frame defining a magazine well; and a top cover having a forward end pivotally connected to the frame and defining an upper portion of the bolt passage.