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Lightweight Bolt Carrier Group

Bolt carrier group for AR15, M16, or M4 compatible with semi and full auto versions. Carrier is machined from Mil-Spec 8620 tool steel with shrouded firing pin and Mil-Spec chrome lined interior. BCG includes the Mil-Spec chrome lined and heat treated gas key. Gas key is sealed then secured to carrier with Grade 8 fasteners and properly staked per Mil-Specs. This ensures proper gas system functioning. The bolt assembly is CNC machined from Mil-Spec Carpenter No. 158® steel then shot peened for increased strength per Mil-Spec; includes tool steel extractor with Wolff spring, viton O-ring , black insert; tool steel ejector pin spring; firing pin chromed finished with firing pin retaining pin and cam pin. Total weight completely assembled 8.2oz. HPT (High Pressure Tested) and MPI (Magnetic Particle Inspected).

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

  • Mil-Spec CNC Machined from 8620 Tool Steel case hardened to 58 - 60 rockwell with chrome lined interior
  • Mil- Spec Chrome Lined Gas Key
  • Key Staked with Grade 8 Screws, per Mil-Spec
  • Mil-Spec Carpenter 158® Bolt
  • Mil-Spec Ejector w/ Spring
  • Mil-Spec Extractor w/ Wolff Spring, viton O-ring and insert
  • Mil-Spec Firing Pin w/ Chrome Finish
  • Mil-Spec Cam Pin
  • 5.56 BCG Weight - 8.2oz.
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$300.00
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    1. Slickkkkkk

      Haven’t installed it yet to test, but the black coating seems to almost want to slide out of my hand when it’s bone dry. So weird but looks like it will perform well. on 18th Aug 2020

    2. GREAT CUSTOMER SERVICE

      I HAVE 2 BCGs FROM THESE GUYS NOW AND IVE BEEN SUPER IMPRESSED. THEY WAS OUT OF STOCK IN WHAT I WAS LOOKING TO BUY BUT THEY REACHED OUT TO ME WHEN IT WAS AVAILABLE AND GAVE ME THE DISCOUNTED PRICING THAT WAS AVAILABLE AT THE TIME I REQUESTED. COULDNT ASK FOR ANYTHING BETTER on 30th Jul 2020

    3. If I could afford it.

      I would run this bolt in all my AR,s on 4th May 2020

    4. If I could afford it.

      I would run this bolt in all my AR,s on 4th May 2020

    5. Awesome

      Flawless and looks awesome love it will buy more on 19th Dec 2019

    6. slick as snot

      After shooting with this BCG I have had the song "Smooth Operator" stuck in my head! The mystic black looks even better than I anticipated and when they used the terms lipophillic and hydrophobic in the same sentence I knew this was the BCG for my build. Great customer service and they even included a sticker and small cleaning towel! on 29th Aug 2019

    7. Mystic black is amazing

      I ordered the lightweight in MB and it’s amazing. Super slick. I haven’t fired it yet but broke down the bolt and every piece came coated and oiled and ready to go. Very impressed. Wish I could get an XPB with this coating, much nicer than the DLC which is already a very nice finish. This is the best finish on the market for your BCG you will not be disappointed. I love it. on 12th Jul 2019

    8. If you want the best for your build then buy this!!!

      I now own two of these lightweight bcg. One in bronze and this latest one is Mystic Black. It definitely lives up to the highest standards for an OCD gun enthusiast like myself. The finish is remarkable. The attention to detail on the small things shows up as a BCG that you know is worth every penny of its cost. I’ve only ran about 400rds through it so far with zero issues. You won’t be disappointed. BUY one!!!! on 23rd Apr 2019

    9. Lightweight BCG and Awesome Customer Service

      Purchased three of these BCG's and they are VERY high quality. Very smooth and easy to clean. I had an issue with my barrel and the team over at Cryptic helped me get everything taken care of. Great company and great products. on 10th Oct 2018

    10. LIGHTWEIGHT BCG GOLD

      I am now a big fan of Cryptic's. The quality of the BCG and finish is way above the competition, and it is unbelievably and unrealistically smooth and easy to clean. Forget nickel boron and everything else, this is the way to go. The price you pay is very reasonable for what you get, and shipping with Cryptic is lightning fast! 11/10 would be buying again. on 3rd Oct 2018

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