US PATENT SUBCLASS 89 / 156
.~.~ Operating as gas piston and/or recoil member

Current as of: June, 1999
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89 /   HD   ORDNANCE

125  DF  AUTOMATIC {14}
155  DF  .~ Movable chamber type (e.g., revolver) {2}
156.~.~ Operating as gas piston and/or recoil member

DEFINITION

Classification: 89/156

(under subclass 155) Guns wherein the movable chamber operates as a gas piston and/or a recoil member to unlock and/or open the breech.

SEE OR SEARCH THIS CLASS, SUBCLASS:

159, and 191.01+, for other gas piston- operated guns.