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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  • Product Reviews


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    1. Smooth

      Awesome product, can’t be more happier!!! on 28th May 2020

    2. Beauty and precision in one small package

      This thing kicks ass. Smooth as oiled glass. And a nice smooth cycle after every shot. Gonna buy more. on 20th May 2020

    3. Sexy AF

      I love my new Deep Blue bolt Carrier Group. The coating is amazing and so easy to clean. It’s as simple as a wipe and boom clean. Smooth operations in the gun and definitely a conversation piece at the range. I love it! Totally worth it. on 15th May 2020

    4. Craftmanship

      Great product, good fit, easy to clean. on 13th May 2020

    5. .458 socom mystic silver

      Quality is next to none, the only BCG I'm interested in purchasing is cryptic coatings. Exceeded expectations, customer service is amazing. Very pleased. on 11th May 2020

    6. Gorgeous

      One of the best looking BCG on the market!!! It looks better in person. WORTH EVERY PENNY. Will order more for my new builds in the future. THANK YOU CRYPTIC COATINGS! on 11th May 2020

    7. Slippery

      They are high quality, and thats what i wanted! You get what you pay for people. These bcgs are top of the line. on 8th May 2020

    8. Awesome product. Better Customer service!

      The bcg is flawless. Runs perfect even completely dry.

      The customer service is second to none. I sent in an email question and they instantly replied (not an automatic reply). Contacted me within minutes that my item was on stock. Shipped incredibly fast. Will order again!
      on 6th May 2020

    9. Just Awesome!!!

      Just received my 2nd BCG this company and can say they are amazing. My first was the Mystic black and just got a Mystic Bronze from the blemished dept. I’ll just say I couldn't See why they considered it blemished and they gave me 15% off. Only went with the blemished as they had a Mystic Bronze available. Even better was I ordered it and within 30 minutes got a shipping notification. Can’t beat that. I’ll definitely keep buying from these guys/ gals. Awesome company. Top notch products. on 1st May 2020

    10. Amazing

      This bcg is amazing, very slick to the touch and easy to take apart. Plus the coloration is awesome, the pictures dont do it justice. on 30th Apr 2020