• High pressure tested (HPT) and magnetic particle inspected (MPI)
  • DPMS style
  • Properly staked gas key
  • Shot peened bolt
  • Laser engraved ST spider logo
  • Chrome interior carrier and gas key


  • Caliber: .308 Win / 7.62 NATO
  • Weight: 17.75 oz.
  • Finish: Phosphate
  • Material:
    • Bolt Carrier: 8620 Tool Steel
    • Bolt: 9310 Tool Steel
    • Extractor: 8620 Tool Steel
    • Gas Key: 8620 Tool Steel
  • Profile: Full-Auto

**A full-auto (A.K.A. M16) bolt carrier installed in a standard semi-auto AR-15 will not make the gun fire full-auto.


  • DPMS Gen I pattern LR308 rifles

*Will not fit DPMS Gen 2 pattern rifles


  • 1x Bolt Assembly
  • 1x Extractor
  • 1x Cam Pin
  • 1x Bolt Carrier
  • 1x Carrier Gas Key
  • 1x Firing Pin
  • 1x Firing Pin Retaining Pin


The AR-10 (.308 AR) has become a popular choice for those who want an AR-15 platform rifle in a larger caliber. Gun guys like to have things their way, and the AR-10 parts market is lush with components ripe for the choosing. When you’re ready to choose a 308 bolt carrier group for your AR-10 build, the Spikes Tactical 308 BCG is a solid choice for the armorer who wants a phosphate finished AR10 BCG.

Individual Component Quality Of The Spikes Tactical 308 BCG

Each individual component in Spikes Tactical 308 BCG is precision machined from the best materials and then given the appropriate finish to be sure its service ready and will remain that way. Exterior surfaces feature a phosphate finish that will take on even the roughest treatment and come out unmarred, ready to fight another day. Internal surfaces are chrome coated where appropriate to provide quality service with resistance to fouling and friction. Your 308 bolt carrier group from Spikes Tactical will provide a superior service life in even the toughest operating conditions.

Purpose Chosen Materials

Spikes DPMS style carrier is machined from 8020 Tool Steel with a durable manganese phosphate outer finish and chrome lining that will resist corrosion and fouling. It’s designed to accept the demands of full auto applications and operates well with most LR-308 system calibers including the 7.62 NATO and the popular .308.

Spikes AR10 BCG features a shot peened 9310 Tool Steel bolt. The extractor is made of Phosphate finished 8620 Tool Steel and features an upgraded spring for improved tension. The Gas Key is of 8620 Tool Steel, features a chrome interior and is properly staked for worry free operation for the life of the BCG.

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