Spike's Tactical 5.56 NATO M16 Cut AR-15 Bolt Carrier Group - Nickel Boron

Manufactured by Spike's Tactical
SKU: ST5BG03
MPN: ST5BG03
Manufactured by Spike's Tactical
64 Reviews
$202.50

In Stock

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Details

Details

Your bolt carrier group is one of the most critical parts of your build. Don't buy an imitation. Spike's Tactical AR-15/M16 Nickel Boron Bolt Carrier Group. These complete bolt carrier groups come magnetic particle inspected and high pressure tested. The carrier is made from 8620 steel and the bolt from 9310 tool steel. The gas key is properly staked, the extractor spring has been upgraded with an O-ring for increased tension, and all surfaces are coated with nickel boron. Nickel boron is much easier to clean and can help your firearm run more reliably when heavily fouled or with little lubrication. The Spike’s Tactical Spider Logo is engraved on the right side of the carrier to show through the ejection port. Assembled BCG weighs 11.6 oz.

Includes:

  • Firing pin with hard chrome finish.
  • Cam pin with nickel boron finish.
  • Retaining pin.

Bolt carrier:
  • 8620 tool steel.
  • Full Auto/M16 cut.

Bolt:
  • 9310 tool steel.
  • Shot peened.
  • High pressure tested.
  • Magnetic particle inspected.

Extractor:
  • 8620 tool steel.
  • Nickel boron finish.
  • Extractor spring.
  • Black extractor insert.
  • Viton O-Ring.

Gas key:
  • 8620 tool steel.
  • Grade 8 hardware.
  • Properly staked.
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Specifications

Bolt FinishNickel Boron
Bolt Material9310 Steel
BrandSpike's Tactical
Caliber Gauge5.56 NATO
Carrier FinishNickel Boron
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedHigh Pressure Tested
Magnetic Particle InspectMagnetic Particle Inspected
ManufacturerSpike's Tactical
PlatformAR-15
Weight11.6 Oz
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

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Ratings & Reviews

64 reviews

4.5
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Nothing beats nickel

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I have three nickel boron BCGs. I will never go back to the black nitrate BCGs again. You can see and feel the difference of the cycling immediately. Worth every penny!!

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Dependable from the first round

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Fast shipping from Primary Arms, received well packed. Disassembled and inspected all parts and applied a light coating of Ballistol, wiped down and reassembled. Slapped in a new 18” stainless Areo Precision upper and hit the range. After dialing in a 1x8 primary arms LPVO I was consistently smacking an 8” plate at 300yards. No issues with the new bolt after running about 60 5.56 rounds. Cleaning was as expected (very easy to wipe down) gotta love nickel boron bolts. Will be buying another for my next build :)

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Nickel boron Bolt carrier group

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This is a great BCG quality craftsmanship, looks great feels great runs great I wouldn’t go with any other BCG for my AT15. The spider logo is just another awesome look to a great piece.

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Amazing BCG, best coated BCG.

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This is hands down the best BCG I’ve ever used and had the pleasure to use, this is the smoothest and fastest BCG I’ve ever ran.
Great price, amazing quality and quick shipping from Primary Arms.

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