Gas Impingement

US12372317 - Bolt carrier with gas exhaust pocket

A bolt carrier for gas impingement rifles equipped with a sound suppressor mechanism. The bolt carrier is configured to tortuously direct gas to a gas exhaust pocket and into a magazine well of the gas impingement rifle, thereby lessening ejection port light signature and significantly reducing the peak noise in the vicinity of the firer's ears. The gas exhaust pocket of the bolt carrier also improves the operator air quality and reduces bolt lug and chamber fouling associated with the other devices that have attempted to address the noise problem.