OT Firearms Full Mass BCG | Nitride | 5.56 NATO

Old Testament Firearms Bolt Carrier Group is Black Nitride finished with and 9310 Bolt. These BCG are precision machined and finished.

Features:

• Lifetime Warranty Against Manufacturer Defects
• 8620 M16 Cut "Full Auto" Carrier
  • Black Nitride Finish
  • Properly Heat Treated
• 9310 5.56/.223/300 blackout Bolt
  • Heat treated
  • Shot peened
  • Nitride finish
  • Magnetic Particle Inspected (MPI)
• Billet Gas Key
  • Nitride finish
  • Grade 8 fasteners
  • Properly staked to ensure reliability
• 4140 Cam Pin nitride treated for wear resistance
• Billet Machined Extractor
  • Heat treated and shot peened
  • Phosphate coated
  • Extractor insert and O-Ring
• 17-4 H-900 Stainless Steel Firing Pin
• 100% Made in 'Merica