Cryptic Coatings 5.56 NATO AR-15 Steel Bolt Carrier Group - Mystic Gold

Manufactured by Cryptic Coatings
SKU: CC-0101
MPN: CC-0101
Manufactured by Cryptic Coatings
6 Reviews

In Stock

Standard orders will ship out in 1 business day (M-F) if ordered by 3:30 pm CST. 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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Introducing the Cryptic Coatings AR-15 5.56 NATO Steel Bolt Carrier Group in Mystic Gold. This full-auto BCG is compatible with AR-15, M16 and M4 platforms. It provides reliable function and performance with a Mil-Spec 8620 aircraft quality steel with chrome-lined interior and a shrouded firing pin.

This BCG comes complete with a chrome-lined and heat-treated gas key that is secured to the carrier with Grade 8 fasteners and properly staked per Mil-Spec to ensure proper gas system functioning. It has shot-peened Carpenter No. 158 steel bolt assembly for increased strength per Mil-Spec. It also includes a tool steel extractor with spring and viton O-ring, a firing pin chromed finished with firing pin retaining pin and cam pin.


  • Mil-Spec Bolt Carrier Group
  • Made from 8620 Steel and heat treated to 60-61 RC
  • Mil-Spec chrome lined carrier interior
  • Mil-Spec chrome lined gas key
  • Key Staked using grade 8 screws per Mil-Spec
  • Mil-Spec Carpenter 158 steel bolt with spring and ejector
  • Tool steel exteror, spring, and viton O-ring
  • Mil-Spec firing pin with chrome finish
  • Mil-Spec cam pin
  • Full auto carrier
  • Weight: 11.55 oz
  • Mystic Gold coating

This BCG is HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected), making it reliable and ready for use. It is backward compatible with all semi-auto rifles and weighs 11.55 oz. Get the Cryptic Coatings AR-15 5.56 NATO Steel Bolt Carrier Group in Mystic Gold today and experience the performance of this high-quality BCG.

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Bolt FinishTitanium Nitride PVD
Bolt MaterialCarpenter 158 Steel
BrandCryptic Coatings
Caliber Gauge5.56 NATO
Carrier FinishTitanium Nitride PVD
Carrier Material8620 Carpenter Steel
Carrier StyleM16 Bolt Carrier
High Pressure TestedHigh Pressure Tested
Magnetic Particle InspectMagnetic Particle Inspected
Weight11.55 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

Ratings & Reviews

6 reviews

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Awesome bcg! Looks great in my bcm upper! And Fast shipping!

Great finish

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Compared to my NIB bcg’s I have used, this finish is lasting way better. I have had it for about a year in a suppressed 300 blk and still wipes clean like new. I would definitely buy again.


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Did I really need this? No, but it sure looks sexy. Functions as should, clean up is easy. Only have about 150 rounds with it. No issues. I am a BCG snob, I would buy another if needed.

Just buy it!

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I have the mystic gold and black. My Father has the mystic silver. All of them clean off with a dry paper towel and the finish is super slick. I've only only shot the mystic gold for about 100 rounds and the finish is still perfect. The mystic black has about 1000 rounds in it and the cam pin is the only place with VERY slight wear. If you were reluctant to buy this bolt on a Gucci build, don't be! It's worth it!

No Problems

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I am a bcg snob. I love the gold finish, all pieces fit together well and it functions smoothly. I will be buying another for my next build.

Straight up sexy

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Really nice fit and finish. Staking is perfect. Wouldnt hesitate to recommend.