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Bolt Carrier Group
Bolt Carrier Group

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Our Price: $125.00

Stock Status:In Stock
Availability:: Usually Ships in 1 to 2 Business Days
Product Code: BCG-C4

Centurion Arms Bolt Carrier Group

Centurion Arms C4 Bolt Carrier Group was created with MPI tested bolts and marked to give you the ultimate confidence in your weapon system. This full auto carrier is heat treated and precision machined. The gas key is staked on both sides of both bolts.


  • Mil-spec Carpenter No. 158
  • MPI bolt (magnetic particle inspected)
  • Shot peened bolt
  • Chrome lined carrier (auto)
  • Chrome lined gas key
  • Gas key hardened to mil spec
  • Grade 8 fasteners
  • Staked gas key
  • Tool steel extractor

Average Rating: 5 of 5 Total Reviews: 2 Write a review »

  3 of 3 people found the following review helpful:
Best BCG hands down February 1, 2018
Reviewer: Jake from Parker, CO United States  
I have 12 of these guys in rifles and have many 10s of thousands of rounds through them. I get more life out of these bolts then I do with the BCM's and others. For 105-125 bucks for these guys, I won't even consider another BCG.  Monty and Corrie are the best in the business. These folks continue to get my business.  A+ all around.

  3 of 3 people found the following review helpful:
High Quality mil-spec bolt October 17, 2017
Reviewer: Bill Bronaugh from marylandUnited States  
Checks all the boxes. Double staking on both gas key bolts, thats nice to see. MPI tested naturally. At least on my sample, I see great machining. It actually has a very nice surface, nicer than my BCM bcg's and hell, theyre pretty nice BCGs.
Besides being a top shelf BCG, I really like supporting people like Centurion Arms, they are some of the nicest people Ive done business with.