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Modified PSA Full Auto AR-10 BCG (.308/7.62) Black Nitride


Our modified Palmetto State Armory PA10 .308 Nitride Bolt Carrier Group Full Auto AR-10 Bolt Carrier Group .308 / 7.62 Bolt Carrier Group is the perfect firing mechanism for your big-bore rifle build. This high quality BCG features a Black Nitride finish, is MPI/HPT and includes an added weight in the tail of the Bolt Carrier to slow cyclic rate as well as felt recoil.

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  • PSA PA-10 .308 Nitride Bolt Carrier Group. 9310 steel bolt assembly with extra strength extractor springs that is nitride for increased durability. 8620 carrier, nitride treated, with a nitride treated gas key properly staked with grade 8 fasteners.
  • Additional 2.5 ounce weight installed and pinned inside bolt carrier tail to slow cyclic rate as well as felt recoil.
  • Additional CNC milling to belly of BCG ensures engagement of AR-10 Auto Sears for registered full auto Lower Receivers.
  • Finish: Black Nitride – advanced lower friction coating that minimizes the need for lubricants and cleaning
  • Gas Key: 4130 Steel attached with Grade 8 hardware and properly staked
  • Firing Pin: Machined from 8740 steel and hard chrome coated
  • Forward Assist serrations
  • Carrier fits AR .308 compatible style AR Uppers and Rifles

Bolt Features:

  • Material: Case Hardened 9310 Steel
  • Finish: All bolt components are shot peened and black nitride coated
  • Extractor: Machined from 4340 Steel with double o-rings and double springs
  • Magnetic Particle Inspected and High Pressure Tested
  • High pressure bolt – external surfaces are CNC ground after heat treat for a precision fit and firing pin hole diameter is reduced to .070″
  • Multi-caliber Bolt designed to function with .308 and 7.62×51 .308 based cartridges.

BCG Includes:

  • Bolt carrier
  • Complete bolt
  • Firing pin
  • Cam pin
  • Retaining pin

Made in the USA.