Coated Bolt Carrier Group

Coated Bolt Carrier Group

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Coated bolt carrier group (full auto version) for AR15, M16, or M4 machined from Mil-Spec 8620 aircraft quality steel with shrouded firing pin and Mil-Spec chrome lined interior. BCG includes the proper chrome lined and heat treated gas key. Gas key is secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. This ensures a strong staking and proper gas system functioning. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158® steel and shot peened for increased strength per Mil-Spec; includes tool steel extractor with spring and viton O-ring; firing pin chromed finished with firing pin retaining pin and cam pin.

HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).

Complete Mil-Spec M-16 Bolt Carrier with Bolt Assembly HPT/MPI Tested:

  • Mil-Spec BCG Machined from 8620 Aircraft Quality Steel and heat treated to 60-61 RC
  • Mil-Spec Chrome Lined Carrier Interior
  • Mil- Spec Chrome Lined Gas Key
  • Key Staked with Grade 8 Screws, per Mil-Spec
  • Mil-Spec Carpenter 158® Bolt w/ Spring and Ejector 
  • Tool Steel Extractor w/ Spring and viton O-ring
  • Mil-Spec Firing Pin w/ Chrome Finish
  • Mil-Spec Cam Pin
  • Full Auto Carrier (Backward compatible with all semi-auto rifles)
  • 5.56 BCG Weight - 11.55 oz.
Calculated at checkout
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    1. AR 10 bolt

      Love it!! So easy to clean! Wish I could’ve gotten it in blue though ! on 25th Nov 2020

    2. Awesome Quality. Exceeded my expectation.

      Packaged neatly and was pre lubricated out of the box and felt great to hold in the hand.
      Tough as it is clean. Craftsmanship is incredible.
      Ran in the AR smoothly. Very much worth the money.
      on 23rd Nov 2020

    3. AWESOME quality except Blue is not blue

      Absolutely love this BCG. Easy to clean and looks great. I bought the mystic blue version but it's clearly a silver appearance. Not complaining as much as I am making a point for those of you who think blue means blue. I will buy this brand again for my next AR in the future. on 18th Nov 2020

    4. Always exceptional

      Always as good as the last... only BCG I use on 29th Oct 2020

    5. Best BCG coating ever

      Bought another Cryptic BCG, pretty soon I’ll have one in every color! By far the most slick feeling coating ever and easiest to clean, it’s amazing! on 24th Oct 2020

    6. Fantastic BCG

      I own 5 of Cryptic Coatings BCG's wouldn't consider anything else you of the line enough said. on 20th Oct 2020

    7. Possibly the prettiest BCG I've ever seen

      I bought one of these for a client build, and looked over the specifications for the Mystic Black coating very carefully before I selected it. When it arrived, it was beautiful. I haven't torn it down yet, but it is well designed, and has an almost sensual feel to the finish. It's absolutely beautiful.

      I will probably be buying these for every high-end build I do from now on, as long as Cryptic Coatings can keep up with the demand. My only complaint about them is that the process is time consuming, and as soon as they come in stock, they're sold out.

      I'll know better how they perform after I put a couple of hundred rounds through the rifle, but if the BCG works as well as it feels, it'll be a top notch performer.
      on 14th Oct 2020

    8. Beautiful

      I bought the Gold and this thing is an attention grabber. Everybody loves it when they see it! Very well made and overall a very high quality piece. Shipping was quick. I believe I ordered it on a Sunday and received it either Wednesday or Thursday of that week. I’ve already recommended to several others! on 12th Oct 2020

    9. Superior

      This product is well made and easy to clean. Works flawlessly. Good job!
      on 11th Oct 2020

    10. Above and Beyond

      Phenomenal function, visual and overall quality from shipping to buying. 100/10 Would recommend. on 9th Oct 2020