Rainier Arms Precision Match 308 Bolt Carrier Group - Black Nitride HPR

The Rainier Arms Precision Match .308 BCG in Black Nitride is machined and finished to a higher standard to meet and exceed all Mil Spec. It is machined using the most precise equipment in the industry. The bolts are MPI tested & Marked to give you ultimate confidence in your weapon system. Our Bolt now features our improved Firing Pin, optimized for 6mm & 6.5mm calibers High Pressure Cartridges.

• 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 Retaining Pin:
  • Precision Machined 4140
  • Heat Treated
  • Precision ground to diameter
  • Firing Pin:Colt Full Auto Spec
  • Machined 4140
  • Heat Treated
    
    
• Weight 1.2 lb