AR-15 .458 SOCOM / .450 BUSHMASTER BOLT CARRIER GROUP / NITRIDE
MPI inspected
8620 STEEL CARRIER
9301 STEEL HEAD
AUTO CARRIER
MELONITE FINISH
COMES COMPLETELY ASSEMBLED WITH PROPERLY STAKED GAS KEY
FOR 458 SOCOM OR SIMILAR (.472 BOLT FACE)
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Tags: .458/ 450 bolt carrier group / nitride .450, bushmaster ar-15, line parts socom