Mystic Gold Steel BCG – .458 SOCOM / .450 Bushmaster
A coated bolt carrier group for AR15, M16, or M4, made from Mil-Spec 8620 steel and including a chrome-lined gas key and extractor.
- The bolt carrier group is HPT and MPI tested.
- The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158® steel and shot peened.
- The gas key is secured with Grade 8 fasteners and properly staked per Mil-Spec.
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