USED – SIONICS Bolt Carrier Group for .223/5.56- Phosphate
The Greatest Bolt Carrier Group for your AR-15. The SWS Bolt Carrier Group is HP/MPI Tested – Auto Version – Machined to USGI Specifications, Phosphate Coated with use of OCKS (Optimized Carrier Key Screw) and properly staked using a MOMOAKS.
- Mil-spec Carpenter No. 158® Steel
- HPT Bolt – High Pressure Tested / Proof
- MPI Bolt – Magnetic Particle Inspected
- Shot Peened Bolt
- Chrome Lined Carrier – Auto
- Chrome Lined Gas Key
- Gas Key Hardened to USGI Specifications
- OCKS (Optimized Carrier Key Screw)
- Key Staked properly using a MOMOAKS.
- Tool Steel Extractor
- Sprinco Heavy Duty Extractor Spring
- Black Extractor Insert
- Machined to USGI Specification