Spikes Tactical M16 Auto Nickel Boron Bolt Carrier Group
Original price was: $225.00.$202.95Current price is: $202.95.
Elevate your AR-15 rifle’s performance with the Spikes Tactical M16 Auto Nickel Boron Bolt Carrier Group. This complete BCG is MPI and HPT tested for durability, with 8620 steel construction and a Carpenter 158 steel bolt. Nickel boron coating ensures smooth operation, while the upgraded O-ring extractor spring enhances reliability. With the Spike’s Tactical Spider Logo, it’s both stylish and reliable.
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Description
Spike’s Tactical Nickel Boron M16 Bolt Carrier Group for .223/5.56 and 300 Blackout
The Spikes Tactical M16 Auto Nickel Boron Bolt Carrier Group is the perfect addition to your AR-15 rifle. The complete bolt carrier group’s magnetic particle inspected, and high pressure tested, ensuring that it can withstand the most intense use. Also, the bolt carrier’s made from 8620 steel and the bolt from carpenter 158 steel, making it extremely durable. Additionally, the gas key has been properly staked, the extractor spring has an upgraded O-ring for more tension, and all surfaces on the Spikes Tactical M-16 Full Auto BCG assembly are Nickel Boron Coated, including the cam pin, Gas key, Bolt assembly, and carrier. Lastly, the Spike’s Tactical Spider Logo is engraved on the right side, making this a truly unique and stylish addition to your rifle.
Spike’s Tactical Nickel Boron BCG Specifications:
Mil Spec Carrier
8620 Tool Steel
Full Auto M-16
Mil Spec 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
Weight: 11.6oz
SKU: ST5BG03
Warning: This product contains chemicals known to the state of California to cause cancer and birth defects or reproductive harm. For more information, visit www.p65warnings.ca.gov
A complete bolt carrier group (BCG) includes the bolt carrier, bolt, firing pin, firing pin retaining pin, cam pin, and extractor with extractor spring and insert. Nickel boron (NiB) is an electroless coating applied to the BCG surfaces that provides a very hard, slick surface with a silver appearance. The reduced friction coefficient of nickel boron compared to phosphate finish reduces the force required for the carrier to cycle through the action, and the slick surface makes the BCG significantly easier to wipe clean during maintenance — carbon and fouling do not adhere as tenaciously to NiB as they do to phosphate. The M16 carrier profile is fully compatible with AR-15 lower receivers in semi-automatic fire and provides additional mass and a more complete gas seal at the carrier key compared to a cut-down AR-15 profile carrier.
Additional information
| Weight | 2 lbs |
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| BCG Coating |
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Frequently Asked Questions
What are the advantages of nickel boron coating?
Nickel boron (NiB) provides a very hard, slick surface that reduces friction during cycling, makes the BCG significantly easier to clean (carbon doesn’t adhere as strongly to NiB as to phosphate), and provides good corrosion resistance. The silver appearance also makes it easy to see carbon buildup during cleaning.
Is the M16 carrier compatible with an AR-15 lower?
Yes — the M16 carrier profile is fully compatible with standard AR-15 lower receivers in semi-automatic fire and is the standard carrier used by most quality BCG manufacturers for its additional mass and improved gas seal.
Does NiB require different lubrication than phosphate?
NiB coated BCGs can function with less lubrication than phosphate due to the lower friction coefficient of the coating, but standard AR-15 lubricants work well. Follow the manufacturer’s recommendations for lubrication intervals.
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