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| Number | Title | Issue Date |
| 7347023 | Machine guns having detachable barrels and methods operating the same Machine guns having detachable barrels and methods of operating the same are disclosed. An illustrated example firearm includes a housing; a removable barrel; a latch to releasably secure the barrel in the housing, the latch having a released state and a secured sta... | 03/25/2008 |
| 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 crossbar having an intermediate portion connected to the rear end of the ba... | 07/10/2007 |
| 7137219 | Machine guns having detachable barrels and methods of operating the same Machine guns having detachable barrels and methods of operating the same are disclosed. An illustrated example firearm includes a housing; a removable barrel; a latch to releasably secure the barrel in the housing, the latch having a released state and a secured sta... | 11/21/2006 |
| 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 formed thru the insert in a longitudinal direction generally axial of ... | 03/22/2005 |
| 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 assembly attached to the barrel at a second angular position r... | 08/19/2003 |
| 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 magazine, opposite the cylinder, a circular valve (18) that ... | 01/21/2003 |
| 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 breech block is guided through the breech block receiving area b... | 03/23/1999 |
| 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 chamber. The gas piston has piston ring members seated ther... | 10/20/1998 |
| 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 invention. In this cylinder (9) and around the magazine tube ... | 07/04/1995 |
| 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 barrel pressure drops to a safe level. The device has a hollow... | 02/14/1995 |
| 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 receives such gases, with the piston moving forwardly to compr... | 10/18/1983 |
| 4270437 | Gas operated automatic weapon A belt-fed, gas operated automatic weapon of a type in which the gas pressure developed in the bore is ported just forward of the chamber and utilized to compress a system of opposing spring sets which in turn operate the various mechanisms involved in th... | 06/02/1981 |
| 4253378 | Gas operated automatic weapon A belt-fed, gas-operated automatic weapon of a type in which the gas pressure developed in the barrel bore during firing is ported just forward of the barrel chamber to be utilized to compress a system of opposing spring sets which in turn operate the var... | 03/03/1981 |
| 4210060 | Gas operated automatic weapon A belt-fed, gas-operated automatic weapon of a type in which the gas pressure developed in the barrel bore during firing is ported just forward of the barrel chamber to be utilized to compress a system of opposing spring sets which in turn operate the var... | 07/01/1980 |
| 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 from the case of a chambered cartridge. In the disclosed fire... | 04/05/1977 |
