Geissele Automatics Reliability Enhanced BCG, Bolt Carrier Group, 5.56 NATO, Includes Geissele Stress Proof Bolt, Black

The Geissele Reliability Enhanced Bolt Carrier Group comes with the Geissele Stressproof Bolt. The Forged Stressproof Bolt is made from Carpenter 158+, developed directly with Carpenter Steel metallurgists to produce a cleaner material with fewer impurities. This makes the Stressproof Bolt stronger and more fatigue-resistant, capable of 5 times the life of a mil-spec bolt. Each Forged bolt is rigorously inspected, high-pressure tested, mag particle inspected, and Nanoweapon coated. • Designed for 5.56 Rifles • Nanoweapon Coated • High-Pressure Tested • Mag-Particle Inspected