$149.00
Caliber: 5.56 NATO / .223 Remington;M16-style full-auto compatible carrier;Carrier material: 8620 steel;Carrier finish: Blacknitride+ by H&M;Carrier features precision ground exterior and all three interior dimensions;Bolt material: 9310 steel;Bolt heat treated, shot peened, and MPI tested;Bolt finish: Blacknitride+;Gas key material: Billet 4130 steel;Gas key secured with grade 8 fasteners and properly staked;Cam pin: Hardened 4140 steel;Extractor: Billet 4140 steel with insert and Viton O-ring;Firing pin: Heat-treated 8640 steel with Blacknitride+ finish;Superior corrosion resistance and heat dissipation;Reduced friction for smoother cycling;Easier cleaning and maintenance;Compatible with AR-15 platforms in 5.56 NATO, .223 Remington, .300 Blackout;100 percent American made