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Product Discontinued by Manufacturer
BRG 5.56mm/.223 Complete Bolt Carrier Groups has been discontinued by BRG and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Gun Parts, AR 15 Parts, Rifle Parts, AR15 Upper Parts, Bolt Carrier Groups yourself to try and find the perfect replacement for you!
Product Info for BRG 5.56mm/.223 Complete Bolt Carrier Groups
Magnetic particle inspected (MPI) to ASTM E1444 aircraft quality inspection standards for molecular soundness and longer life of all the below-mnetioned metal parts.![]()
Features of BRG 5.56mm/.223 Complete Bolt Carrier Groups
- Carrer - 8620 (20NiCrMo2-2), heat treated (case hardened to SAE-AMS-6875) - QPQ nitride finish.
- Bolt - 14NiCr14, heat treated (case hardened to SAE-AMS-6875) - QPQ nitride finish.
- Extractors - Aircraft quality alloy steel shot peened. Heat treated to military drawing specification SAE-AMS-6875. Phosphated to 5.3.1.3 of MIL-STD-171.
- Gas Key - 4130, aircraft quality steel, heat treated to SAE-AMS-6875 QPQ HT PROCESS
- Cam Pins - Precision machined. Heat treated to SAE-AMS-6875. Phosphated to 5.3.1.3 of MIL-STD-171.
- Firing Pin - Machined and precision ground for accuracy. Heat treated to military drawing specification per SAE-AMS-6875. Chrome lined per 1.2.2 of MIL-STD-171.
- Firing Pin Retaining Pin - Heat treated stainless steel pin contouring the carrier body.
- Ejector - Precision machined. Heat treated to SAE-AMS-6875. Phosphated to 5.3.1.3 of MIL-STD-171.
- Gas Rings - 3 pc. stainless steel per Mil-Spec.
Package Contents:
- BRG 5.56mm/.223 Complete Bolt Carrier Groups
Related Products to BRG 5.56mm/.223 Complete Bolt Carrier Groups
BRG 5.56mm/.223 Complete Bolt Carrier Groups Unavailable & Discontinued Models
List of Unorderable Models
- DEMO, BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG , MPN: BCG556BRG-DEMO , Code: 5YZ-BCG-HJ11KA-BCG556BRG-DEMO
- BRG 5.56mm/.223 Complete Bolt Carrier Groups, Nitride, Black, BCG556BRG , MPN: BCG556BRG , UPC: 689481713779 , Code: 5YZ-BCG-HJ11KA-BCG556BRG






































































































































































































