Jul 29, 2025

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.

Inventors: Austin Gabriel Reis-Green
Filing date: 2024-08-22

bolt carriergas impingementfirearmsuppressor

The patent describes a bolt carrier designed for gas impingement rifles that incorporates a gas exhaust pocket to redirect gas, thereby reducing noise and light signature during operation. This innovation also enhances air quality for the operator and minimizes fouling in the bolt lug and chamber compared to existing solutions.

Claim 1

A bolt carrier group for a breechloading firearm, wherein the bolt carrier group is capable of operative association with a housing or a receiver that is provided with a cartridge case ejection port, the bolt carrier group comprising: a bolt carrier having a first side and a second side defined and separated by a housing centerline of the housing or the receiver operatively associated with the bolt carrier group, wherein the first side is adjacent said cartridge case ejection port; a gas exhaust pocket disposed in the second side; one or more exhaust ports fluidly communicating the gas exhaust pocket with an internal exhaust-pressurized portion of the bolt carrier; the gas exhaust pocket defined in part by snug operative association with the housing or the receiver so that exhaust gas received into the gas exhaust pocket from the internal exhaust-pressurized portion of the carrier via the one or more exhaust ports expands in the pocket; and wherein a portion of the gas exhaust pocket comprises an aperture which directs the received exhaust gas into a forward portion of an ammunition feed magazine of the breechloading firearm. a bolt carrier having a first side and a second side defined and separated by a housing centerline of the housing or the receiver operatively associated with the bolt carrier group, wherein the first side is adjacent said cartridge case ejection port; a gas exhaust pocket disposed in the second side; one or more exhaust ports fluidly communicating the gas exhaust pocket with an internal exhaust-pressurized portion of the bolt carrier; the gas exhaust pocket defined in part by snug operative association with the housing or the receiver so that exhaust gas received into the gas exhaust pocket from the internal exhaust-pressurized portion of the carrier via the one or more exhaust ports expands in the pocket; and wherein a portion of the gas exhaust pocket comprises an aperture which directs the received exhaust gas into a forward portion of an ammunition feed magazine of the breechloading firearm.

Google Patents

https://patents.google.com/patent/US12372317

USPTO PDF

https://image-ppubs.uspto.gov/dirsearch-public/print/downloadPdf/12372317