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X2 - .223/5.56 Full-Auto There are no products in this category

X2 - .223/5.56 Full-Auto
Made in USA. Arms Industries CNC machined .223/5.56 Full Auto Bolt Carrier Group kits include auto sear, gas key, and bolt. Kits are produced from 9310, 4340 Alloy Steel (normalized), select 4340 VAR or 300M alloy steel due to their very high fatigue strength and resilience, where fracture toughness and impact strength are crucial, and are Nitride treated. Gas key is secured to carrier via USGI domestic Grade 8 fasteners and properly staked per Mil-Specs. These properly... More