SDT 5.56/300 BLK Bolt Carrier Group (BCG) - Polished NiB

Information

• M16 Style Carrier
  • Machined from 8620 Steel
  • Heat Treated
  • Final Grind Before Plating
  • Polished Nickel Boron Coating (NiB-X)
• 5.56/.223 Bolt
  
  • Machined from 9310 Steel
  • Heat Treated
  • Shot Peened
  • MPI
  • Polished Nickel Boron Coating (NiB-X)
• Billet Gas Key
  • Machined from Solid Billet of 4140 Steel
  • Properly Seated with Grade 8 Fasteners
  • Properly Staked
  • Polished Nickel Boron Coating (NiB-X)
• Cam Pin
  • Machined from 4140 Steel
  • Heat Treated and Ground 
  • Polished Nickel Boron Coating (NiB-X)
• 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