Bolt carrier groups (BCGs) for weapon systems are provided herein. The BCG includes a carrier assembly, a bolt assembly, and a gas chamber disposed therebetween. The carrier assembly contains a carrier body that includes a shoulder, a piston surface, and an inlet port. The shoulder is disposed within the carrier body and contains a channel and the piston surface is located on the shoulder at least partially encompassing the channel. The inlet port extends through the carrier body and is configured for receiving propellant gas into the carrier body. The bolt assembly is at least partially contained within the carrier assembly and includes a bolt head opposite of a bolt tail where the bolt tail is at least partially protruding into the channel in the shoulder. The gas chamber is disposed between the carrier body, the piston surface, the bolt tail, and two gas seals disposed on the bolt assembly.
F41A 5/24 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated by direct action of gas pressure on bolt or locking elements
F41A 3/16 - Rigid bolt locks, i.e. having locking elements rigidly mounted on the bolt or bolt handle and on the barrel or breech-housing respectively the locking elements effecting a rotary movement about the barrel axis, e.g. rotating cylinder bolt locks
F41A 5/22 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated having two or more gas pistons
The present disclosure generally relates to extractors for extracting cartridges from firearms, as well as bolts including the extractors, and barrels or barrel extensions configured to receive the bolts and extractors. The extractor includes a support brace having a width greater than 0.095 inches. A barrel extension includes a shortened lug to accommodate an extractor having a support brace with a width greater than 0.095 inches.
F41A 15/12 - Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns
F41C 7/00 - Shoulder-fired smallarms, e.g. rifles, carbines or shotguns
Implementations described herein generally relate to gas operating systems including direct gas impingement systems for a weapon system, such as the AR15, M16, and M4 weapon systems. The gas operating system includes a gas channel carrier rail and a bolt carrier group. The gas channel carrier rail contains a main gas channel disposed between an inlet end an outlet end, where the outlet end is flared to have a larger diameter than the inlet end. A slot is formed in the outlet end and extends along the main gas channel. The bolt carrier group contains a carrier assembly, a bolt assembly, and a gas channel carrier guide, where the bolt assembly is at least partially contained within the carrier assembly. The gas channel carrier guide is disposed on the carrier assembly, extends through the slot, and is at least partially disposed into the gas channel carrier rail.
Embodiments of the present invention relate generally to cartridges and modifications for an M16/AR15 rifle. In one embodiment, a modified M16/AR15 rifle or carbine includes a bolt having a maximum outside diameter greater than that of a standard M16/AR15 bolt; and a bolt extractor pivoted to the bolt. The bolt and the bolt extractor are operable to: transport a cartridge from a magazine to a barrel, and eject a spent cartridge from the barrel. The rifle or carbine further includes a barrel extension configured to receive the bolt; a standard M16/AR15 upper receiver coupled to the barrel extension; a standard M16/AR15 lower receiver coupled to the upper receiver.
F41A 3/12 - Bolt action, i.e. the main breech opening movement being parallel to the barrel axis
F24B 5/02 - Combustion-air or flue-gas circulation in or around stoves or ranges in or around stoves
F41A 5/18 - Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
F41A 15/14 - Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns the ejector being mounted on, or within, the bolt
5.
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.
Embodiments of the present invention relate generally to cartridges and modifications for an M16/AR15 rifle. In one embodiment, a modified M16/AR15 rifle or carbine includes a bolt having a maximum outside diameter greater than that of a standard M16/AR15 bolt; and a bolt extractor pivoted to the bolt. The bolt and the bolt extractor are operable to: transport a cartridge from a magazine to a barrel, and eject a spent cartridge from the barrel. The rifle or carbine further includes a barrel extension configured to receive the bolt; a standard M16/AR15 upper receiver coupled to the barrel extension; a standard M16/AR15 lower receiver coupled to the upper receiver.
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