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| Number | Title | Issue Date |
| 5651205 | Bolt and firing pin locking system for firearm An autoloading firearm having a reciprocating bolt, a cocking lever and firing pin which bolt and firing pin are locked by a locking lever until the trigger is pulled or until the cocking lever of the bolt is manually pulled back. A linkage operably contr... | 07/29/1997 |
| 4512236 | Sound dampened automatic hand firearm The invention relates to a sound dampened automatic hand firearm provided with silencing means for the firing of projectiles at a muzzle velocity in the subsonic speed range. In order to reduce also the breechblock noise during shot release, in addition t... | 04/23/1985 |
| 4301712 | Device for controlling the degree of blowback delay in automatic weapons Device for controlling the degree of blowback delay in automatically operable weapons is provided and comprises locking means which are operable to prevent opening of the weapon breech until breech pressures have dropped to generally residual, safe levels... | 11/24/1981 |
| 4232583 | Firearm with recoil movement delaying mechanism Automatic or semiautomatic firearms which operate on the blowback principle are equipped to fire more powerful cartridges by the provision of a simple lightweight mechanical recoil movement delaying mechanism which increases the breech opening delay time ... | 11/11/1980 |
| 3960053 | Automatic firearm having anti-bounce sear A belt-fed, gas-operated, air cooled automatic firearm having a novel mechanism for transferring link-connected ammunition rounds from a novel ammunition magazine to a feed position in an automatic firearm and having a novel sear mechanism including an an... | 06/01/1976 |
