BOLT CARRIER GROUP

AR-15 Bolt Carrier Group
Sota Arms provides the AR16 bolt carrier group in numerous calibers.  Our M16 bolt carrier groups (BCG) are full-auto grade.  Bolts s and bolt carriers are made with 9310 Steel and have a black nitride finish. Our AR-15 bolt carrier groups are available in 5.56 NATO, 7.62x39, 6.8, 6.5  and more calibers! 
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The bolt carrier group is a crucial piece of the gun’s anatomy. While some pieces of the AR-15 are simply in place for extra comfort, speed or style, the bolt carrier group is absolutely necessary for the gun to function correctly. Without this piece operating as intended, the gun will not fire and will be largely inoperable.

Bolt Carrier Group