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Spike's Tactical Nickel Boron M16 BCG Bolt Carrier Group
Spike's Tactical Nickel Boron M16 BCG Bolt Carrier Group

Spike's Tactical Nickel Boron M16 BCG Bolt Carrier Group

Part Number:ST5BG03
On sale: $202.50
Retail Price:$225.00
You Save:$22.50(10%)
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Spike's Tactical Nickel Boron M16 BCG Bolt Carrier Group

Your Bolt Carrier Group is one of the most critical parts of your build. Don't buy an imitation. This is the same BCG Spike's uses on their builds.

If you’re looking for the finest BCG on the market today, search no more! This is the same Mil-Spec BCG that we sell but the only difference is that it’s coated in Nickel Boron. And yes, it’s High Pressure Tested and Magnetic Particle Inspected (HPT/MPI)

Nickel Boron has proven itself to be the most durable finish on the market. It’s much smoother than Hard Chrome, it’s easier to clean, makes the rifle cycle smoother, it can be run almost lube free for thousands of rounds, and it will never chip, peal, or flake off! Because of these benefits, Nickel Boron is being adopted by the Military as well as many Government agencies. As you can see, these BCGs are a huge improvement over a standard Phosphate BCG and it’s even an improvement over Hard Chrome.

Upgrade to a better BCG today. You won’t be sorry!

NOTE: This BCG works in AR-15s. This BCG does NOT make your rifle fully-automatic.


Complete Nickel Boron Plated M-16 BCG

Nickel Boron Coating Inside and Out (Bolt, Carrier, and Gas Key)

Laser Engraved with ST Spider logo

Mil Spec Carrier

  • 8620 Tool Steel
  • Full Auto M-16

  • Bolt

  • 158 Carpenter Steel
  • Shot Peened
  • High Pressure Tested (HPT)
  • Magnetic Particle Inspected (MPI)

  • Mil Spec Extractor

  • 8620 Tool Steel
  • Nickel Boron Finish
  • Extractor Spring
  • Black Extractor Insert
  • Viton O-Ring

  • Mil Spec Gas Key

  • 8620 Tool Steel
  • Grade 8 Hardware
  • Properly Staked

  • Firing Pin with Hard Chrome Finish

    Cam Pin Nickel Boron Finish

    Retaining Pin

    Weight: 11.6oz


    Written by Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE), Chief of the Firearms Technology Branch
    ...M16 bolt carriers are not designed and intended solely and exclusively for use in converting a weapon into a machinegun and are not any combination of parts from which a machinegun can be assembled.  Further, an M16 bolt carrier is not a firearm as defined in the GCA or a machinegun as defined in the NFA.  An M16 bolt carrier is simply a machinegun part and as such its domestic sale and possession is unregulated under the Federal firearms laws.  It is not unlawful to utilize a M16 machinegun bolt carrier in a semiautomatic AR15 type rifle.


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