Geissele Automatics Reliability Enhanced, Bolt Carrier and Gas Key, Black

The Reliability Enhanced Bolt Carrier is a 5.56mm full-mass, full-auto-rated M16/M4 bolt carrier group manufactured in Geissele's state-of-the-art facility in North Wales, PA. The carrier features a properly torqued and staked, Chrome-Lined, Nanoweapon-coated gas key. The extended upper rails on the carrier also provide much greater stability and dramatically increase feeding reliability. The carrier is coated with Nanoweapon for maximum corrosion and wear resistance. • Designed for 5.56 Rifles • Nanoweapon Coated • High-Pressure Tested • Mag-Particle Inspected