(under subclass 125) Guns having interrelated movable barrel and gas-operated features.
(1) Note. Where the gas-operated feature involves nothing more than blow back of the breech block or blow forward of the barrel after being unlocked, classification is elsewhere. See the search notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37.01+, for gun mounts for conventional movable guns.
160+, for a gas-operated feature involving nothing more than blow back of the breech block or blow forward of the barrel after being unlocked.
