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| Number | Title | Issue Date |
| 6966138 | Double fire attachment and method for semi-automatic firearms Devices and methods of converting semi-automatic firearms to a double-fire mode where a firearm fires a shot upon a single pull of a trigger, and fires a second shot upon a release of the trigger. A clip attachment can be constructed from a single component shaped t... | 11/22/2005 |
| 6510778 | Automatic bolt hold-open assembly The present invention relates to an automatic bolt hold-open rotating assembly to convert a manual bolt hold-open function to an automatic bolt hold-open function in automatic and semi-automatic pistols and rifles, such as the Ruger 10/22 semi-automatic .... | 01/28/2003 |
| 5736667 | Automatic firearm arranged for high safety and rapid dismantling A portable firearm employs a frame and an upper mechanism having a bolt and a sliding hammer. A barrel assembly is supported on the frame and has an axis, a muzzle and a breech. The sear transversely straddles the barrel assembly and can project above its... | 04/07/1998 |
| 4821621 | Multipurpose repeating firearm having alternate firing mechanisms A relatively simple repeating firearm is disclosed which includes a sliding bolt which is removably housed within a firearm housing and which is biased into a bullet loading and firing position by means of springs provided in an overlapping fashion with a... | 04/18/1989 |
| 4697495 | Tripping mechanism for the conversion closed-bolt automatic rifles to open-bolt ones A tripping mechanism is disclosed for the conversion of automatic rifles of the so-called closed-bolt type to rifles of the open-bolt type. The components of the mechanism are premounted within a box-like support which is readily insertable in the trip bo... | 10/06/1987 |
| 4567810 | Automatic firearm A firearm in the form of a submachine gun which can fire in either a semiautomatic or full automatic mode. The firearm is provided with a front sear, a front trigger and a rear sear/trigger in a construction which allows the operator to instantly change b... | 02/04/1986 |
| 4450752 | 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... | 05/29/1984 |
| 4448109 | Automatic or semi-automatic firearm A firearm including a basic action system having differential recoil, blow-back operation with moving barrel and a firing mechanism for use in conjunction with the basic action system of the invention or any other type of system operable to fire from a cl... | 05/15/1984 |
| 4133128 | Safety device for rifles A safety device for rifles that will hold the breechblock thereof in a locked, open position, after firing, for so long as the firing pressure on the trigger is maintained. The safety device also utilizes the rifle safety actuator to hold the breechblock ... | 01/09/1979 |
