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 Batch 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)
- BCG Weight – 11.55 oz.
Barrett N Neely –
I bought this carrier just under a year ago. This carrier has performed flawlessly. It does run fast as advertised so a heavier buffer was used. I used the Vltor A5 buffer system with the Gisselle 42 rifle spring. I love the quality of the coating and the steel they use. I will be buying my components from Cryptic from now on. They are also able to keep their product in stock. That is a big plus.
Christian Estrada (verified owner) –
Bought this for my first ever build (13.7) and works like a charm. Very easy cleaning and no issues with about 500 rounds through it. Will be using another bcg for my next 11.5 build
Arik Avery (verified owner) –
This BCG will complement any rifle. For me, it’s perfect for my MK12 and by far the best part to look at. With a high quality finish, you certainly get what you pay for. A BCG that will be a conversation starter if there’s no carbon on it. When there is carbon covering it, it’s not an issue whatsoever. Just use the microfiber they include in the box, or use a rag with some cleaner and it’ll be back to factory new with just one swipe (or very close to it). I cannot recommend this BCG enough! If you’re looking for a custom, high quality finish that’s easy to clean. Cryptic is the way to go.