Geissele Reliability Enhanced 5.56mm AR-15 Bolt Carrier Group

Geissele Reliability Enhanced 5.56mm Bolt Carrier Group. The Reliability Enhanced Bolt Carrier Group 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 chrome-lined, Nano coated gas key. The cam pin is machined from H13 tool steel and coated with Nanoweapon chrome-nitride for maximum corrosion and wear resistance. The extended upper rails on the carrier provide greater stability and dramatically increase feeding reliability. The Carrier is coated with Nanoweapon for maximum corrosion and wear resistance. The Geissele Stressproof Bolt is included. Each forged bolt is inspected, high pressure tested, mag particle inspected, and Nanoweapon coated. Package contents: Geissele 5.56mm Reliability Enhanced Bolt Carrier Group. Specifications: Caliber 5.56mm; Manufacturer Geissele.