Black Nitride 308 Bolt Carrier Group

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$249.99

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This Premium 308 Complete Bolt Carrier Group is treated with Black Nitride for enhanced durability, lubricity, and ease of cleaning. Carrier is made from 8620 steel, bolt is made from 9310 steel and is HTP/MPI tested and shot peened. The Bolt and Bolt Carrier Assembly comes complete with cam pin, firing pin, and firing pin retainer. This bolt carrier group is compatible with DPMS style AR-10 rifles with a multi-caliber bolt designed to function with .308, 7.62×51, 6.5 Creedmoor, .338 Federal and other .308 based cartridges.

Made in USA

6 in stock

SKU: AZM-308-BLKN-MULTICAL. Categories: , , .

Product Description

Black Nitride 308 Bolt Carrier Group

This Premium 308 Complete Bolt Carrier Group is treated with Black Nitride for enhanced durability, lubricity, and ease of cleaning. Carrier is made from 8620 steel, bolt is made from 9310 steel and is HTP/MPI tested and shot peened. The Bolt and Bolt Carrier Assembly comes complete with cam pin, firing pin, and firing pin retainer. This bolt carrier group is compatible with DPMS style AR-10 rifles with a multi-caliber bolt designed to function with .308, 7.62×51, 6.5 Creedmoor, .338 Federal and other .308 based cartridges.

This multi cal BCG is better due to its universal capabilities on multiple caliber platforms:

  • Black Nitride treated for enhanced durability, lubricity, and ease of cleaning
  • Works with 308 and 7.62×51 DPMS Style AR-10 Rifles
  • Bolt is made from 9310 steel and is MPI, shot peened, and Black Nitrided
  • Firing pin is 8740 steel and Hard Chrome Coated (to work with a multi-cal bolt)
  • Black Nitride lined gas key and carrier interior
  • Gas key is machined from 4130 steel with Grade 8 harware and is properly staked to ensure proper positioning
  • Hardened steel extractor with double extractor spring and double o-ring
  • Mil-spec gas rings

Specifications:

Carrier

  • Machined from 8620 tool steel
  • Heat treated to military specifications
Bolt
  • Machined from 9310 tool steel
  • Heat treated to military specifications
  • Shot Peened
  • Maganese Phosphate or Black Nitride treated
  • Ground to meet military required tolerances
  • HTP (High Pressure Tested) / MPI (Mag Particle Inspected)
Gas Key
  • Machined from 4130
  • Heat treated to military specifications
Extractor
  • Machined from 4340
  • Heat treated to military specifications
  • Shot Peened
Firing Pin
  • Machined from 8740 steel
  • Heat treated to military specifications
  • Ground to meet military required tolerances
Cam Pin
  • Machined from 4340
  • Quench and temper heat treat
  • Ground to meet military required tolerances

 

Build a AR-10 here.

Made in the USA

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