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

Manufactured by Spike's Tactical
Manufactured by Spike's Tactical
100 Reviews

In Stock

Standard orders will ship out in 1 business days or less 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. 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.



Flawless..unbelievably fast shipping..will order again there customer service is amazing..best I have dealt with out of any company I have ordered from

Perfect !


Glad i spent the extra few bucks to get it done right the first time !

Spikes Tactical AR15 Complete Bolt Carrier Group -


Good product, fast shipping. What can I say. Well made bolt group, properly made. Functions well.

beautiful BCG


good value. installs easy, as you'd expect. travels smooth clean. good looking too.

like a Glove


Got this bcg after a few recommendations for something good that wouldn't break the bank. Happy with my purchase. Flawless so far ...

Spikes Tactical BCG


Got this on the cyber Monday sale what can you say the price was great. The machining and finish on this thing is very impressive. I have two M4 clones and will use this for a back-up or for my next build.

spike bcg


great bcg for a great price and really fast shipping.

Great product!


Great experience with Primary Arms. I bought this part along with many others to complete my first build and it all went together easily. I have about 300 rounds through the rifle already with no issues. Will definitely buy from them again.



Great Price on sale ! No problemwith the DS Arms Barrel . i will buy this BCG on the next build !

Kudos to one of the best!


Great product sold by a great company Primary arms is, fast & excellent in every way!