SI Defense .223/5.56 AR-15 Bolt Carrier Group

AR-15

.308/7.62 AR

Accessories

Montana Cinch

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SI Defense Complete and Assembled .223/5.56 AR-15 Bolt Carrier Group

Our Price: $125.00

Availability: Usually Ships in 1 to 2 Business Days
Product Code: SI AR-15-BCG-223

Coating*:

Description

SI Defense AR-15 .223/5.56 bolt carrier groups are completely mil-spec, assembled and ready to drop in. Carrier is machined from 8620 steel, heat treated, mag pen inspected and manganese phosphated per Mil-DTL-16232G. Bore is hard chromed. The bolt is machined from Carpenter 158, shot peened, mag pen inspected and manganese phosphated per Mil-DTL-16232G. Gas key tube is hard chromed and key is properly torqued and staked.