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

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
101 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination. NFA items will take longer to ship and are dependent upon ATF processing times.

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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. These complete bolt carrier groups come magnetic particle inspected and high pressure tested. The carrier is made from 8620 steel and the bolt from no. 158 carpenter steel or 9310 depending on supply. The gas key is properly staked, the extractor spring has been upgraded with an O-ring for increased tension, and all surfaces are MIL-SPEC heavy phosphate coated or internally chrome lined. 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.


  • Firing pin with hard chrome finish.
  • Cam pin phosphate finish.
  • Retaining pin.

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

  • 158 carpenter steel or 9310 depending on supply
  • Shot peened.
  • High pressure tested.
  • Magnetic particle inspected.

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

Gas key:
  • 8620 tool steel.
  • Grade 8 hardware.
  • Properly staked.
  • Chrome interior.
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Bolt FinishManganese Phosphate
BrandSpike's Tactical
Caliber Gauge5.56 NATO
Carrier FinishManganese Phosphate
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedHigh Pressure Tested
Magnetic Particle InspectMagnetic Particle Inspected
Manufacturer.Spike's Tactical
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.

Ratings & Reviews

101 reviews


Spike's complete bolt carrier group 5.56


Another top quality part from Spike's. Best service from PA too!

Spike's bolt carrier goup


appears very high quality, love the spider logo engraving



As always, PA and Spikes come through every time.

Overview of product & website


Awesome product & awesome sale from Primary Arms. You guys rock. Best stuff at the best prices.

Spikes Tactical Bcg


Been wanting this bcg for awhile, got it for my new pistol build. This thing looks beautiful, I have 3 Bcgs and this one looks the best. Fit and Finish is superb. Can't wait to fire it. PA as always fast shipping. Will always be a costumer.

Spikes Bolt Carrier Group


Bolt works great. high quality material.

good for carbine , needs tweak for pistol


comes with standard extractor spring (4 coil) and standard o-ring. that would work fine in a carbine or rifle, but for pistol with short barrel (7.5") i was getting failure to extract, so i had to upgrade the extractor spring to a 5 coil spring to fix the issue.

Great service as always


Delivered fast, product is what you would expect from Spikes. 100 rounds in and no issues.

Good Deal - Lightning Fast Shipping


Everytime I order from these guys I get a shipping notice the very same day. In addition, the customer service I've received in the past was absolutely top notch.

Quality BCG


Fits like a glove in my Palmetto upper.Worth the $ for the quality. Works like it should.