AR-15 Nickel Boron Bolt Carrier Group - Semi [5.56MM/300BLK]


Nickel boron coated bolt and semi carrier for 5.56MM / .223 cartridges. Will also work with 300 AAC blackout. High quality mil-spec+ with properly staked gas key. 9310 steel bolt with an 8620 steel carrier. Tight piston rings for correct function and virtually no gas leakage. MPI tested bolt. A pristine and reliable BCG for your AR-15 rifle!

Advantages of Nickel Boron:

Nickel Boron coatings are columnar in growth resulting in a distinct nodular topography which serves to reduce surface to surface contact of two mating / sliding surfaces reducing drag / friction. The nodular structure dissipates heat at greater efficiency due to greater surface area.

  • Harder surface results in less wear
  • Reduced Friction
  • Reduced Heat
  • Operates with little to no lubricant
  • Easy to Clean

Product Features:

  • 9310 Steel Bolt - MPI/HPT Tested
  • 8620 Steel Carrier
  • Properly Staked Gas Key
  • Nickel Boron Lined Carrier
  • Nickel Boron Lined Gas Key
  • Nickel Boron Firing Pin
  • Correct Piston Ring Tightness
  • Lightweight

Detailed Specs:

Coating: Nickel Boron

Weight: 11.4 Oz.

AR-15 Nickel Boron Bolt Carrier Group - Semi [5.56MM/300BLK]
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  • Item #: DEZ-1001B-BCG
Price $174.99
Availability Out-of-Stock

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