.223/5.56 NATO Bolt Carrier Group Phosphate


  • Manganese phosphate finish for corrosion resistance
  • HPT and MPI
  • Carpenter Technology 158 alloy bolt (shot peened)
  • 4340 Tool steel extractor (shot peened)
  • S7 Tool steel ejector (shot peened)
  • Full auto profile 8620 alloy carrier
  • 4130 Chromoly gas key with staked hex screws
  • 4340 Chromoly cam pin
  • 8640 steel alloy firing pin with chrome plating

997 in stock

SKU: 104BCG001-3-1-1 Category: Tags: , , Product ID: 1622


If you are looking to build an AR-15 for hard use, to standards that exceed Mil-Spec expectations, then look no further than 10-4 Arms. Every component of this bolt carrier group has been properly heat treated and is designed for reliability and longevity.

“We ship fast!” Order by 5PM EST M-F or 12PM EST Saturday and your order ships same day.

Additional information

Weight 0.5 lbs

Black, Chrome


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