Open Box SIONICS Bolt Carrier Group for .223/5.56- Phosphate

Used/Open Box Item: This product is not eligible for return. Click to learn more about used products.

Original price was: $169.95.Current price is: $140.53.


Product Summary

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


Technical Information


Carpenter 158




5.56 NATO / .223 Remington

Firearm Compatibility

Catalog Location

California Prop 65 Warning

WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information visit