Rainier Arms Ultramatch .308 Bolt Carrier Group (BCG)



Match style DPMS Pattern Bolt Carrier Assembly designed to work with DPMS style barrel extension and compatible upper receivers. Always check compatibility prior to use in any firearm.

Carrier Specifications:
  • Full Auto Carrier
  • SAE 8620
  • Heat Treated
  • Shot Peened
  • Finish is QPQ treated


Bolt:9310 Steel
  • Shot Peened
  • Heat Treated
  • QPQ treated
  • Extractor:S7 Tool Steel
  • Precision Machined
  • Shot Peened
  • Heat Treated
  • QPQ treated


Extractor Components:

Extractor Spring made of Music Wire (The best spring steel available) “Reliability post” exceeds MIL-SPEC. Made with OUR OWN multi-cavity mold with the highest grade of chemical and heat resistant rubber, VITON. Our Reliability posts are NOT commercially available. VITON Rubber “Full-Auto O Ring” made if you want the highest grade of chemical and heat resistant rubber.

Extractor Retaining Pin:
  • Precision Machined 4140
  • Heat Treated
  • Precision ground to diameter
  • Firing Pin:Colt Full Auto Spec
  • Machined 4140
  • Heat Treated


$439.99