LIMITED TIME OFFER! Cheytac USA 5.56/300 Blackout Nitride MPI Full-Auto Profile Bolt Carrier Group C158 Bolt

MSRP: $199.99
Was: $129.99
Now: $99.99
(You save $100.00 )
(2 reviews) Write a Review

Out of stock

**Limited Supply, this offer will not last long. May take a couple additional days to ship**

Everyone will argue that the most important part in your AR15 is the bolt carrier group. For a limited time, Breek Arms has received a unique opportunity to work with Cheytac USA to help liquidate some of their high end Bolt Carrier Groups used in their own civilian model AR-15s. We are literally the only company that has been allowed to do this and its for a limited time! Get yours while you can at this incredible price!

Cheytac USA is widely known throughout the military community. Since 2020 they began manafucturing rifles for civilians. Just like all of the rifles they produce (military and civilian), these BCGs are thoroughly inspected and tested in house. They come with a high quality low friction nitride coating that protects against corrosion and heat that an AR15 endures over time. Each bolt carrier group under goes a magnetic particle inspection (MPI). Full-auto profile, 8620 steel carrier, 4140 gas key and cam pin, 17-4 stainless firing pin, and a carpenter 158 bolt. Without a doubt, this BCG will give you the absolute best performance.


  • New AR15 Bolt Carrier Group
  • Fully Assembled Bolt & Carrier Assembly
  • Caliber: .223/5.56 & 300AAC/Blackout
  • Carrier Steel: 8620
  • Carrier Finish: Nitride
  • Bolt Finish: Nitride
  • Bolt Steel: Carpenter 158
  • Profile: Full Auto Profile
  • Gas Key: 4140 Billet Gas Key with Grade 8 Hardened Fasteners, Staked per MilSpec
  • Bolt is Magnetic Particle Inspected (MPI)
  • Fastened with Grade 8 screws
  • Staked Per Mil-Spec
  • Firing pin machined from 17-4 H-900 Stainless Steel
  • Retaining pin 
  • Cam pin also 4140 with Nitride Finish
  • All Parts Made in the USA

2 Reviews Hide Reviews Show Reviews

  • 5
    Cheytac USA bolt carrier group

    Posted by David on Feb 21st 2022

    High Quality! Great value! Great customer service!

  • 5

    Posted by Ronald Newbold on Feb 1st 2022

    You can't go wrong with CHEYTAC products. However, this was the first time I've ordered from Breek and I was VERY impressed with the quick shipping and the customer service