The Gorilla Machining 5.56 Bolt Kit is a complete, battle-ready replacement BCG kit built for performance and longevity. The .223/5.56 bolt is precision machined from 9310, shot-peened, and finished with a durable QPQ coating along with the extractor for exceptional wear resistance and smooth operation. The S7 tool-steel extractor ships with a heavy-duty extractor spring and O-ring for rock-solid extraction, while the firing pin—made from annealed 8740 steel, shot-peened and hard-chrome coated—ensures consistent ignition. The cam pin meets Mil-Spec standards and features a fail-zero Nickel Boron coating for easy maintenance and long life, and the retaining pin is Mil-Spec and fits any standard AR-15 BCG. High quality, dependable parts at an unbeatable price—made in the USA and ideal as a direct OEM replacement or upgrade.
BOLT:
CAM PIN:
RETAINING PIN:
FIRING PIN:
*BARRELS & BOLTS MUST BE PROPERLY CHECKED FOR HEADSPACE PRIOR TO USE. FAILURE TO DO SO MAY RESULT IN DAMAGE, PERSONAL INJURY, OR DEATH*
