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Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel

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Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel

Item # 6093093

Battle Arms Development Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel
Battle Arms Development Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel
$136.99
Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel

Item # 6093093

Battle Arms Development Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel
Battle Arms Development Battle Arms Development Bolt Carrier Group for AR-15/M16/M4, 223 Rem/5.56 NATO/300 BO, Black Nitride, Steel
$136.99

Bolt Carrier: 8620 Steel Case Hardened, Machined from Billet, Firing Pin: 17-4 H-900 Steel, Center-less Ground, Gas Key: 4140 Steel with Grade 8 Screws, Properly Staked, Machined from Billet, Cam Pin: 4140 Hardened Steel, Finish: Black Nitride finished with an ultra-hard, corrosion-resistant top surface layer for wear resistance and minimal need for lubricants. Bolt: 9130 steel Shot Peened, Mil-Spec Dimensions, CNC Ground After Heat Treat, Black Nitride Finished MPI/HPT, Extractor: 4140 Billet, Manganese Phosphate Finished for Positive Grip.

  • Bolt carrier made from 8620 steel, case hardened, and machined from billet
  • Firing pin made from 17-4 H-900 steel; center-less ground
  • Gas key made from 4140 steel with Grade 8 screws; properly staked; machined from billet
  • Cam pin made from 4140 hardened steel
  • Finish on parts: black nitride with an ultra-hard, corrosion-resistant top layer for wear resistance and minimal lubricant needs
  • Bolt made from 9130 steel; shot peened; mil-spec dimensions; CNC ground after heat treat
  • Bolt finished with black nitride, MPI/HPT (magnetic particle inspection / high pressure testing)
  • Extractor made from 4140 billet; manganese phosphate finished for positive grip
  • Firearm Fitment: AR15/M16/M4
  • Caliber: 223 Rem/5.56 NATO/300 BO
  • Finish: Black Nitride
  • Material: Steel
  • Weight: 11.50 oz