GEISSELE STRESS PROOF BOLT ASSEMBLY

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Geissele Automatics Stress Proof Bolt Assembly, Bolt, Fits AR-15, Black 05-2991
The Geissele Stressproof Bolt is proudly featured in their Reliability Enhanced Bolt Carrier Group. 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.