M16 Bolt Carrier Group—6.5 Grendel/6mm ARC, Nitride

Outerwild Manufacturing produces our M16 BCG which is trusted by seasoned shooters and depended on by experienced builders. Our goal is to go above and beyond Mil-Spec expectations! Outerwild’s secret sauce: PRECISION GROUND. We machine and grind our BCGs to perform for tens of thousands of rounds. We grind the outside dimensions and ALL three interior dimensions of our carrier, giving our BCGs a near friction-less surface finish. To ensure long-term reliability and corrosion resistance, Outerwild partners with industry-leading finisher: H&M. Their Blacknitride+™ finish delivers the utmost durability and improved lubricity for our BEST-IN-CLASS BCG that is 100% American made!

• M16 Style Carrier
  • Machined from 8620 Steel
  • Heat Treated
  • Final Grind Before Plating
  • Blacknitride+™ by H&M
• 6.5 Grendel Bolt
  
  • Machined from 9310 Steel
  • Heat Treated
  • Shot Peened
  • MPI
  • Blacknitride+™ by H&M
• Billet Gas Key
  • Machined from Solid Billet of 4130 Steel
  • Properly Seated with Grade 8 Fasteners
  • Properly Staked
  • Blacknitride+™ by H&M
• Cam Pin
  • Machined from 4140 Steel
  • Heat Treated
  • Blacknitride+™ by H&M
• Billet Extractor
  
  • Machined from Solid Billet of 4140 Steel
  • Phosphate Coated
  • Extractor Insert Included
  • Viton O-Ring Included
• Firing Pin 
  • Machined from 8640 Steel
  • Hard Chrome Plated
• 100% American Made