M16 Bolt Carrier Group 458 Socom/450 Bm Nitride Mp

Prices last checked June 2020. Prices and availability change often, so confirm on the retailer's site.

Constructed and Finished for the Big-Bore .458

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-nitride finish
• Features torqued and staked gas key

The Brownells M16 .458 SOCOM/450 Bushmaster Bolt Carrier Group provides users with a complete assembly, also including a firing pin, cam pin and a firing pin retaining pin.