Lewis Machine & Tool Company's LMT Gas Piston System is designed to upgrade the AR/M4/M16 series of carbines and rifles. It builds on LMT's CQB MRP platform and runs cooler and cleaner than standard ...

At its core, the AR-15 uses a direct impingement gas system to cycle rounds. This system redirects a portion of the gas ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Brownells, one of the country’s ...

Addax Tactical's AR Gas Piston Upper, the ATAC-GPU (Advanced Tactical AR Carbine Gas Piston Upper), utilizes a specially designed, self regulating, long stroke piston system, for enhanced dwell time ...

** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. ** Two trends have taken hold in the ...

The Army’s plans for a carbine competition could spur innovations in military weapon design. The M4 rifle has been standard issue for U.S. soldiers for the past 15 years. But that could change thanks ...

Key Point: Although common in rifles, the gas piston system was unknown among handguns mostly because it was just unnecessary. In a way, the Desert Eagle is part revolver, pistol and rifle. In the mid ...

The Heckler and Koch 416 assault rifle is arguably a step up from the M4 carbine. Outwardly similar to the M4 in appearance, internally the rifle uses a gas-piston operating system, not the ...