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.

Overloaded Ordering System


The Spikes products speak for themselves... Good Stuff. I want to comment on the Customer Service. When I clicked on the "BUY" button things went haywire. I did not know if my purchase went through or not. Seasonal overloaded... The folks at Primary Arms followed up in a business like manner and followed through on getting my order straightened out. The customer Service is what makes me a return customer. Merry Christmas 2013.Hobo

Spike's Tactial FA BCG: Good BCG


The Spike's Tactical full auto BCG seems to be a good-to-go product. Overall quality seems good--both cosmetically and construction-wise. No problems with sizing: it gauged (go/nogo) with no issues when installed. I expect it to shoot well.

Awesome experience as always!


These guys are simply the best! I have purchase quite a few items from them and always get a shipment confirmation from them usually within hours. That's service that is hard to come by these days. When looking for purchases I always check Primary Arms 1st! Other vendors should take note.

great deal!!


these seem to be high quality parts!!!!!fast shipping...thank you!!!!!

Great bcg!


This bcg has all the specs you will find in ones costing much more. This is a fantastic value and you're not settling for a second rate part. All this plus Primary Arms incredible service made this impossible to pass up!

Cheapest site for a spike BCG.


This BCG is awesome!!!! Smooth, looks good, and for a good price.

fantastic bcg.


This bcg is excellent. Properly staked and excellent all around. I grabbed it for a great price while PA was having a sale. Shipping was quick too. Couldn't be more pleased.

One of the best I have used


This is my third one for a new build. Never had a problem with Spikes !!

great product


Top notch as all spikes products would definitely recommend



Very well made BCG from Spikes Tatical. Solid and well staked. Primary Arms did a great job getting it shipped quickly. Great place to do business with!