Patent ID: 9534860
Date: 2017-01-03
CPC Classifications: F41A

Claim:
1. A gas-operated firearm, comprising: a lock; a lock housing; a lock spring; a guide rod projecting forwards from the lock housing in a shooting direction; a lock activation device including a carrier biased by the lock spring and moveable upon the guide rod to move the lock between a locking position and an unlocking position; a barrel including a rear part connectable to the lock housing and a front part with a muzzle, the barrel having a gas withdrawal block including at least one gas withdrawal borehole opening into the barrel, the barrel separable from the firearm without a requirement to remove the guide rod from the lock housing; a pressure piston movable within the gas withdrawal block to displace the carrier against the force of the lock spring to move the lock into the unlocking position to unlock the lock.