Home / Bolt Carrier Groups / Phase 5 / Phase 5 M16/M4 Bolt Carrier Group 5.56x45mm NATO Phosphate Chrome Lined
Phase 5 M16/M4 Bolt Carrier Group 5.56x45mm NATO Phosphate Chrome Lined
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Jun 27, 2026
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Black Phosphate Coating
Chrome Lined
HPT/MPI Tested Bolt
Mil-Spec
Specifications
Description
The Phase 5 AR-15 Bolt Carrier Group 5.56x45mm NATO features a heat treated and chrome lined inner with a black phosphate coating. The complete bolt carrier group includes cam pin, firing pin, gas key, and bolt. SpecificationsCaliber: 5.56 NATO / .223 Rem / 300 BLKMaterial: C158 BoltFinish: PhosphateProfile: M-16
