© Primary ArmsForward Controls Design SBCG 5.56 AR-15 Bolt Carrier Group - Dimpled - Nitride
- Brand
- Forward Controls Design
- Caliber
- 5.56x45mm
- Category
- Gun Parts
- Platform
- AR-15
- Gun Part Type
- Bolt/BCG
- UPC
- 788362259624
Overview
The Forward Controls Design SBCG Dimpled is an M16-profile bolt carrier group finished in salt bath nitride, machined from 8620 steel carrier specifications and a 9310 steel MPI-tested, shot-peened, and stress-relieved bolt. Designed for AR-15, M16, and M4 platform uppers, it features Optimized Carrier Key Screws (OCKS) with deep knurling for enhanced gas key retention, and retains forward assist pawl notches for full compatibility with standard uppers. A unique dimpled surface machined into the concave area forward of the gas vents allows for silent bolt closure on upper receivers lacking a forward assist. The bolt is also equipped with a Sprinco 5-coil heavy-duty extractor spring for reliable extraction.
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