Brownells M16 450 Bushmaster / 458 Socom Bolt Carrier Group Nitride
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$167.99
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Brownells M16 450 Bushmaster / 458 Socom Bolt Carrier Group Nitride, Get your .458 SOCOM or 450 Bushmaster AR-15 running perfectly with the Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group, which features construction and finishing designed to provide the best possible performance in your rifle. The Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group features a bolt head built using 9310 steel, which undergoes heat treatment and shot peening for a durable finish. The carrier itself is made using 8620 steel that undergoes hardening after machining. Undergoes magnetic particle inspection Extractor construction includes rubber insert and spring Increased corrosion resistance offered through black-nitrid Mfg: Brownells