$119.99 M4 / AR-15 BOLT / BOLT CARRIER GROUPS
The AR-15 / M4 .223 Bolt Carrier Groups are standard mil-spec with Carpenter 158 bolts and have been shot peened and mag pen tested. The carrier is made from 8620 alloy steel. Coatings: Hard chrome carrier bore; hard chrome gas key bore; manganese phosphate finish per mil spec.
https://www.cactustactical.com/M4-AR-15-BOLT-BOLT-CARRIER-GROUPS_p_1028.html













