Factory Colt SCW complete bolt carrier group assembly for your AR15, M16 or M4 is the only BCG manufactured to truly meet and exceed all Mil Spec standards. Compatible with full-auto or semi-auto receivers. The bolt carrier and bolts are MPI tested & marked to give you ultimate confidence in your weapon system.
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Colt SCW Complete Bolt Carrier Group Assembly
Need SCW Extension tube to make buffer and spring assembly work. Please notify me if they come available. Transaction was smooth and order filled within reasonable time frame.