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Spikes Tactical 5.56 HPT/MPI Bolt Assembly Up to 10% Off w/ Free S&H — 2 models

Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Phosphate ST5B500
Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Nickel Boron Finish ST5B503
Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Phosphate ST5B500
1 of 2 images
Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Phosphate ST5B500
Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Nickel Boron Finish ST5B503
2 of 2 images
Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Nickel Boron Finish ST5B503

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Questions & Answers
Are the gas rings on it like in the picture? Expert Answer

The gas rings on them are silver.

by Ryan Tarczynski, Gear Expert, July 16, 2021
See 2 More Answers
Does this bolt come with anything else besides the actual bolt, like a pin?

This comes with only the bolt.

by Mike B., Verified Owner, February 3, 2021
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review Best Value for a bolt I trust my life to. by Beans, Verified Owner, October 22, 2021
1) I trust Spikes Tactical. I trust the people there. Every purchase and interaction leaves me the same resounding image. Consummate Pros. I’m coming back to phosphate after testing NiB and Nitride coatings. I like advanced coatings with added lubr...
Read More...
1/3 found this helpful
Helpful Positive Review Inspect it by Eric B, Verified Owner, December 31, 2020
Did an inspection of the bolt. Great coating, MPI tested, etc. But... when I pulled off the extractor, the extractor pin had to be hammered out. Figured out that it was a bad/ wrong size spring, and the extractor had been forced on. Replaced with the...
Read More...
5/5 found this helpful
Most Recent Reviews More of a compliment than a review by lynmack, Verified Owner, July 23, 2021
I purchased this bolt assembly and a few other items that went with it during the midst of the covid craziness. There was nothing available for ar15 type weapons at the time and I was overjoyed to find a few parts in stock. There was some confusion i...
Read More...
Read All 3 Reviews
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Product Info for Spikes Tactical 5.56 HPT/MPI Bolt Assembly

A high-quality bolt is a must in any AR-15. Whether you need a spare bolt or are looking to upgrade an existing rifle, look no further than these Bolt Carrier Groups, available with a Black Nitrite or Nickel Boron finish. This is the same bolt Spikes Tactical uses in their builds.image

Specifications for Spikes Tactical 5.56 HPT/MPI Bolt Assembly:

Manufacturer: Spikes Tactical
Caliber: 5.56x45mm NATO
Condition: New
Country of Origin: USA

Features of Spikes Tactical 5.56 HPT/MPI Bolt Assembly:

  • Mil Spec Bolt:
  • Phosphate Finish
  • 158 Carpenter Steel
  • Shot Peened
  • High Pressure Tested (HPT)
  • Magnetic Particle Inspected (MPI)
  • Mil-Spec Extractor
  • 8620 Tool Steel
  • Phosphate Finish
  • Extractor Spring
  • Black Extractor Insert
  • Viton O-Ring

Package Contents:

  • Spikes Tactical 5.56 HPT/MPI Bolt Assembly

Spikes Tactical 5.56 HPT/MPI Bolt Assembly Orderable Models

List of Orderable Models

Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Phosphate, ST5B500 , MPN: ST5B500 , UPC: 855319005471 , Code: 2A8-ABA-HMBA-ST5B500
Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Nickel Boron Finish, ST5B503 , MPN: ST5B503 , UPC: 855319005488 , Code: 2A8-ABA-HMBA-ST5B503

Spikes Tactical 5.56 HPT/MPI Bolt Assembly Unavailable & Discontinued Models

List of Unorderable Models

USED Spikes Tactical Bolt 5.56 Spikes HPT/MPI Bolt Assembly - Nickel Boron Finish, ST5B503, EDEMO1, Used, Condition Fair, Scratches , MPN: ST5B503-EDEMO1 , Code: 2A8-ABA-HMBA-ST5B503-EDEMO-SC-D
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