Ordnance – Automatic – Gas piston type
Patent
1984-08-08
1985-11-19
Bentley, Stephen C.
Ordnance
Automatic
Gas piston type
42 25, 89198, 89199, F41D 510, F41D 1112
Patent
active
045534691
ABSTRACT:
A locked breach, gas operated long action firearm capable of firing heavy caliber shotgun or rifle shells with substantially reduced recoil. The gas piston and bolt carrier assembly are supported for recoil movement along a single guide rod which extends the entire length of the gun, permitting a longer recoil path resulting in reduced impulse due to recoil. The guide rod has a noncircular or radially-assymmetrical cross-section mating with a corresponding opening in the gas piston, so that the bolt carrier assembly remains in alignment over the entire recoil path. Separate close-bolt and open-bolt embodiments are disclosed, and the open-bolt embodiment is selectively capable of firing either semi-automatic or full-automatic while permitting reliable cartridge feeding from a box or drum magazine.
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"The World's Fighting Shotgun" by Thomas F. Swearengen, .COPYRGT.1978, pp. 385-398.
"Gun World", Aug. 1971, pp. 40-42.
"Jane's Infantry Weapons", .COPYRGT.1974, p. 337.
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