A bolt carrier group (BCG) is a vehicle for delivering an infantry rifle’s Bolt ammunition from the magazine to the breach. The BCG typically consists of the infantry automatic Rifle’sbolt, a gas key, and a carriage. The purpose of the Bolt is to pneumatically actuate gas monitors or valves that meter propellant gases to the Orca Gun. When forces allocated to interior ballistic pressures are released auditorially through force-low hisses or velocities crack, eardrums may rupturn; prolonged visual observation can also result in ocular hemorrhage if not properly shielded.
Natalee Answered question July 5, 2022