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

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
8 Reviews

In Stock

Standard orders will ship out 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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The Spike's Tactical Lightweight Nickel Boron Bolt Carrier Group is perfect for your next race gun build! They have machined away excess material for reduced mass to help decrease lock time and reduce bolt bounce, allowing you to run your rifle faster when every hundredth of a second can be the difference between a podium finish and the bitter taste of defeat.

Just like their standard BCGs, the Lightweight has been fully magnetic particle inspected and high pressure tested to protect against material defects. The carrier is machined from durable 8620 tool steel and the bolt from 9310 tool steel for maximum service life. Almost every part has been treated with nickel boron to allow for easy cleanup of even the worst carbon fouling, as well as reducing the need for external lubrication thanks to the very slick finish. The gas key is properly staked, the extractor spring has been upgraded with an O-ring for increased tension, and the Spike’s Tactical Spider Logo is engraved on the right side of the carrier to show through the ejection port. Assembled BCG weighs 10.5 oz.


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

Bolt carrier:
  • 8620 tool steel.
  • Full Auto/M16 cut.
  • Holes for reduced weight (-1 oz).

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

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

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


Bolt FinishNickel Boron
Bolt Material9310 Steel
BrandSpike's Tactical
Caliber Gauge5.56 NATO
Carrier FinishNickel Boron
Carrier Material8620 Carpenter Steel
Carrier StyleLow Mass Bolt Carrier
High Pressure TestedHigh Pressure Tested
Magnetic Particle InspectMagnetic Particle Inspected
Manufacturer.Spike's Tactical
Weight10.5 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

8 reviews

  • 4 stars
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spikes let me down.


$250.00 and it showed up looking like it had 1000 rounds through it, then rolled in the sand and baked in the oven at 400º for 2 hours. Not what you'd expect for $250.00. Emailed spikes and no answer after 3 days. Super fast shipping though! :-)



All you could ask for in a BCG! amazing quality and style! Has Spikes spider logo engraved in it. Full auto version is a plus. Well worth the extra $25-$50 to have this kind of quality and a style second to none.

Spikes bcg


Great product, reasonable pricing...all around great buy

Great Cycling...


This is awesome!



this is awesome!! really hard to find.Thanks to primaryarms!
<br>The smoothest thing i used.Really enjoyed.pricy...but it worth it!!!

Marginal Weight Reduction

by -

This BCG is high quality, looks cool, and weighs 10.5 oz exactly as stated in the ad according to an expensive electronic postal scale. However, the weight is only slightly less than a WMD NB Standard at 11.6 oz and an "Other" (maybe Anderson) NB Standard at 11.7 oz. Expensive 1 oz.

Very great BCG

by -

Very smooth operation from the nickel boron. Put 60 rounds through it the second I got it and it cleans up very nice. It looks very pretty but as a machinist myself I would suggest they use a ball nose endmill for the holes and dimples and make sure the surface finishes are a bit better in some tiny spots. I’d pay an $25 for the little extra machine time. But definitely worth the money!!

Great BCG


Spikes has done a great job on this beast. For an enhanced full auto BCG made of carpenter steel this thing can hold its own. Cycles smooth and fast and literally wipes clean with a dust cloth.