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8181563 |
Gas tappet system for a rifle
A gas tappet system for use in an M16, M4, or AR-15 type rifle having a detachable piston eccentrically connected to an operating rod. A piston having a plenum therein and a releasably attached...
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8176667 |
Firearm sensing device and method
A system for resolving at least one use parameter relating to a firing of a machinegun or of a semi-automatic firearm having a receiver, an action within the receiver and that includes a piston,...
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8161864 |
Firearm gas piston operating system
A gas piston operating system for an autoloading firearm. The gas piston system may include a barrel having a longitudinally-extending bullet pathway, a gas block defining a piston bore, a...
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8141474 |
Charging mechanism for gas powered firearms
An improved mechanism for charging a gas powered firearm, especially with regard to the Kalashnikov variants of rifles known as AK-47s, comprising a modified gas tube having a lateral aperture...
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8117958 |
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...
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8104393 |
Charging handle
The invention relates to a charging handle assembly for a firearm. The assembly includes a handle mechanism having a pull rod to engage an action of a firearm, a handle and a stop surface. A latch...
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8056460 |
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...
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7975596 |
Firearm
An improvement to a firearm of the character having an upper receiver, an operating rod operably associated with the upper receiver for movement between a first position and a second position, and...
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7975595 |
Firearm
A firearm having a bolt carrier comprising an operating rod slot that is open at an end of the bolt carrier. The bolt carrier also includes a cam slot extending from the operating rod slot. The...
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7971382 |
Firearm
An improved firearm having a barrel coupled to an upper receiver where the receiver includes a passageway extending generally parallel to the longitudinal axis, and a guidance feature extending...
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7971518 |
Direct drive retrofit for rifles
A direct drive retrofit system for use with an M-16 or AR-15 rifle for conversion from an impingement system comprising: a gas block, the gas block having a barrel bore and a gas plug bore; a gas...
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7938054 |
Gas spring for a revolver cannon or breech cannon
The characteristic of one or more of the gas springs themselves used in a revolver cannon or breech cannon is adjusted while the system is in operation. This is done by a separate, self-contained...
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7938055 |
Law enforcement carbine with one piece receiver
A semi-automatic or automatic rifle is provided. The semi-automatic or automatic rifle includes a receiver having an integral hand guard portion, a barrel having a bore. The bore is removably...
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7921760 |
Compact gas block with rail interface
A compact gas block with rail interface 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...
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7900546 |
Rifle charging handle with ambidextrous latch
A charging handle for a rifle having a housing. The handle has a body with an elongated bar having a forward end and a rear end. The bar has a bolt engaging element at the forward end, and a...
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7891284 |
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...
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7832326 |
Auto-loading firearm with gas piston facility
A firearm has a body with a bolt assembly reciprocating within the body. A barrel having a bore extends from the body. A gas block with an elongated chamber is connected to the barrel, and a gas...
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7798045 |
Charging handle with forward assist function
The present invention is an improved charging handle for a firearm. The handle is generally non-reciprocating and features a user activated forward assist. The major components are an actuator to...
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7784211 |
Firearm bolt carrier with mechanical/gas key
A firearm includes a barrel having an end coupled to a receiver. A reciprocating bolt carrier is carried by the receiver and movable between a locked position and an unlocked position. The bolt...
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7779741 |
Semi-automatic firing closed bolt-type carbine anti-jamming cartridge loading system
A semi-automatic firing carbine anti-jamming cartridge loading system is provided wherein no feed lips or a portion of said feed lips are removed, wherein the cartridge to be loaded is fed to the...
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7775150 |
Law enforcement carbine with one piece receiver
An indirect gas operating system for an M4 type automatic or semi-automatic firearm. The indirect gas operating system has a gas block having a cylinder. The gas block is fitted to a barrel...
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7739939 |
Direct drive retrofit for rifles
A direct drive retrofit system for use with an M-16 or AR-15 rifle for conversion from an impingement system comprising: a gas block, the gas block having a barrel bore and a gas plug bore; a gas...
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7698987 |
Heavy caliber firearm with enhanced recoil and control characteristics
The invention comprises an improved recoil control device comprising a bolt head and an inertia block for use in a variety of firearms. In one embodiment, the bolt head and inertia block are...
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7637199 |
Gas cylinder components for use with firearms
Methods and apparatus are described for gas cylinder components for use with a firearm with a barrel. The gas cylinder component includes a reception bore for receiving the barrel. Additionally,...
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7610843 |
Individual firearm with improved recock device
An individual firearm with improved recock device comprising a casing (12), a barrel (13), a breech bolt (14), a breech bolt slide (15), wherein the barrel (13) has at least one hole (32), or gas...
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7469624 |
Direct drive retrofit for rifles
A direct drive retrofit system for use with an M-16 or AR-15 rifle for conversion from an impingement system comprising: a gas block, the gas block having a barrel bore and a gas plug bore; a gas...
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7461581 |
Self-cleaning gas operating system for a firearm
A self-cleaning gas operating system for a firearm having a conventional bolt carrier assembly is disclosed comprising: a nozzle assembly having a nozzle in direct communication with a port on the...
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7448307 |
Gas operated semi-automatic rifle
A gas operated semi-automatic rifle is disclosed having a forwardly moving gas piston located under the discharge end of a barrel. The gas piston is connected to a locking mechanism. The locking...
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7343844 |
Firearm recoil absorbing system
An anti-recoil system for counteracting recoil in firearms and weapons using a gas actuated piston assembly is disclosed. A recoil piston is acted upon by gas pressure routed from the...
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7311032 |
Firearms with gas pressure loading mechanisms
Firearms employing gas pressure loading mechanisms are disclosed. An example firearm includes a single force receiving component containing a gas cylinder, and a barrel in communication with a...
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7261029 |
Firearm bolt locking mechanism
A firearm bolt locking mechanism includes a locking pin in the bolt carrier of a firearm like an AK-47 assault rifle or variant thereof. The locking pin is normally urged from the bolt carrier by a...
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7240600 |
Rifle charging handle with ambidextrous latch
A charging handle for a rifle having a housing. The handle has a body with an elongated bar having a forward end and a rear end. The bar has a bolt engaging element at the forward end, and a...
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7237469 |
Firearms having a locked breech
Firearms having a locked breech are disclosed. An example firearm includes a barrel; a bolt head; a firing pin having a bulge; a bolt head carrier having a forward position and a rearward position;...
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7159505 |
Hydraulic breech mechanism for firearms
A hydraulic breech mechanism uses a sealed reservoir of fluid to rigidly support the bolt 6 against barrel 2 resisting pressure generated by discharging a cartridge in chamber 3. Recoil forces...
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6722255 |
Apparatus and method for actuating a bolt carrier group of a receiver assembly
An apparatus adapted for actuating a bolt carrier group apparatus comprising a piston tube attached to a receiver assembly. An operating rod is disposed in a bore of the piston tube. A piston is...
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6681677 |
Method of reconfiguring a firearm receiver system for receiving magazine-fed ammunition and belt-fed ammunition
A method of reconfiguring a firearm receiver system comprises the operations of providing a substantially as-manufactured OEM lower receiver assembly capable of having an ammunition magazine...
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6679156 |
Weapon with rotating barrel
A weapon for firing a projectile is provided that includes a receiver within which is disposed a loading mechanism for loading and unloading the weapon. A feed system supplies the loading mechanism...
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6634274 |
Firearm upper receiver assembly with ammunition belt feeding capability
A firearm receiver system includes an upper receiver assembly capable of receiving magazine-fed ammunition and belt-fed ammunition. A lower receiver is attached to the upper receiver assembly. The...
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6619592 |
Self-actuating firearm
A self-actuating firearm comprising a frame, a breechblock, a barrel provided with a bore, a cylinder which is associated with the barrel and forms an internal chamber which is connected to the...
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6536324 |
Anti-recoil device with brake, brake compensator and recuperator
The invention relates to anti-recoil devices for guns and martars. The anti-recoil device has a brake with a principal cabity which houses a principal piston pierced with holes. The small chamber...
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6516700 |
Automatic weapon
An automatic weapon has a housing 1 with a movable spring-mounted barrel assembly 6 having a barrel 7 and a receiver 8. The receiver 8 has a spring-mounted bolt support 24 with a bolt 27, a buffer...
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6508160 |
Gas-flow device for automatic shotguns
This is a gas-flow device for semiautomatic or automatic shotguns, which consists of a gas-flow cylinder, closed at the front part by a flange with gas discharge ports (17) around the ammunition...
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6487806 |
Weapon housing system for an automatic loading firearm
A lightweight weapon housing system is disclosed for a self-loading firearm. The weapon housing includes an outer and an inner housing. A wall structure in the weapon housing reinforces the...
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6412390 |
Low impulse firing adapter for combination gas and recoil operated weapons
A low impulse firing attachment and companion ammunition for combination gas and recoil operated automatic weapons is comprised of a barrel insert and piston that provide the mechanism for...
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6382073 |
Gas operated shotgun
The invention concerns a gas operated shotgun made up of a barrel (11) a cylinder (12) attached to the barrel and a piston (13) moving in the cylinder and along the guide rod (16) between an...
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6347569 |
Semi-automatic gas-operated shotgun
A semi-automatic, two-shot, gas-operated shotgun having a side-loading port, lower barrel configuration with bottom shell ejection. Gas exit ports are spaced around the barrel and operate a piston...
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6311603 |
Firearm charging handle
A charging handle for a firearm having a receiver, a bolt and bolt carrier reciprocating within the receiver and a gas tube for directing powder gases to cause operation of the bolt carrier and...
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6135005 |
Multiple-barrel, repeating firearm
A two-barrel gun for firing two types of ammunition includes a single breech locking mechanism for both barrels. The gun includes a selector lever for activating one of two bolts associated with...
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6112636 |
Gas-operated pistol
A gas-operated pistol which comprises a frame having a handgrip and adapted to receive a magazine. A slide is mounted for alternating longitudinal movement along the frame. A barrel is provided...
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6019024 |
Compact operating system for automatic rifles
An operating system for automatic rifles is described which permits a user to easily remove and replace the bolt and bolt carrier from the rifle, without requiring the user to employ special tools....
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