AR-15 Bolt Carrier Group Chrome Lined M16 Carrier MPI Bolt Staked Gas Key SI Defense

SI Defense
ARR-1170
223CG0000-1
ARR-1170
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This Si Defense AR-15 BCG uses a chrome lined M16 carrier with staked gas key and MPI bolt to produce a quality option for your next .223 Remington, 5.56 NATO or .300 Blackout build.