Matches 1 - 33 out of 33


Match Document Document Title
8813632 Adjustable firearm gas block  
An adjustable firearm gas block has a gas channel intersected by a threaded bore. A set screw with longitudinal slots is driven through the bore until it enters and constricts the gas channel. A...
8800423 Semi-automatic rifle  
A gas-operated semi-automatic rifle having a barrel group, a receiver group, a bolt group, a stock group, a trigger group, and a magazine group. The barrel group includes a gas-operated operating...
8783160 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...
8505433 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 sleeve removably secured to a forward end of a gas block of the...
8307750 Gas operated rifle with bolt carrier and receiver assembly  
A gas operated autoloading firearm having an improved bolt carrier. The gas piston system may include a barrel defining a longitudinally-extending bullet pathway, a gas block defining a piston...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
7467581 Semi-automatic rifle  
A semi-automatic rifle includes a frame (2); a barrel (3); a sliding guide (9) mounted in the frame (2) and forming one piece with breech bolts (10) which make it possible to control the recocking...
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...
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...
6868770 Autoloading gas port structure  
A gas porting structure for an autoloading gun, wherein the structure consists of an insert fitting within a slot cut laterally thru the gun barrel and wherein one or more slot like gas ports are...
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...
6606934 Ergonomic gas operated gun barrel and method of shortening a gas operated gun  
Presented is a gas operated, semi-automatic rifle having a shortened barrel. For actuating a receiver to provide the semi-automatic feature, the rifle has a gas system including a gas cylinder...
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...
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...
5886281 Breech block control for firearm for projectiles  
The invention concerns a firearm for receiving and firing a projectile. The firearm includes an integral casing having a barrel and a breech block receiving area to the rear of the barrel. A...
5824943 Self-loading rifle with gas-pressure loading arrangement  
A gas-pressure loading arrangement for a self-loading rifle includes a gas cylinder fluidly connected to the bore of the rifle barrel and a gas piston received in the gas cylinder to define a gas...
5429034 Fire arm  
An improved semi-automatic shotgun of the type contains a magazine tube (8) around which is provided a cylinder (9) whose interior part communicates with an interior part of a barrel (2) of the...
5388500 Delayed blow-back for firearms  
Applicant's device improves rapidly firing guns. When such a gun fires, applicant's device delays departure of the gun bolt from the chamber or barrel zone holding a spent round's casing until...
4409883 Gas operated firearm  
A gas operated firearm having means for initially storing energy from the gases released during discharge of a bullet is disclosed. The firearm includes a piston and cylinder arrangement which...
4015512 Gas-operated firearm  
A gas-operated firearm is disclosed in which the gas port is located in the forward part of the chamber, in the part of the barrel bore wall which surrounds the portion of the bullet projecting...
3776096 GAS OPERATED FIREARM  
A belt fed, gas fired machine gun has its gas port located just forward of the firing chamber so that the weight of its associated cylinder and piston is concentrated towards the rear of the gun....
3174401 Actuating mechanism for automatic shotgun  
3093922 Revolver cylinder and mounting therefor  
2981158 Power system for firearms  

Matches 1 - 33 out of 33