5.56/300 Blackout Nitride MPI Full-Auto Rated Bolt Carrier Group

$119.99
(9 reviews) Write a Review
SKU:
BRK351

Breek Arms is dedicated to using the right components for the most reliable functioning AR builds. The most important part in your AR15 is the bolt carrier group. This is why we’ve found a superior BCG 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) to ensure you get a simple, no frill BCG that provides you with the reliability and performance you expect from a high end AR15. This BCG is rated for full-auto use, so you can be sure it will perform well in your semi-auto builds, and even in a full-auto build if you are lucky enough to have that opportunity.

Specs

  • 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: 9310
  • Profile: Full Auto Profile
  • Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec
  • Bolt is Magnetic Particle Inspected (MPI)
  • Gas Key Hardened to USGI Specifications
  • Fastened with Grade 8 screws
  • Staked Per Mil-Spec
  • Firing pin
  • Retaining pin 
  • Cam pin
  • All Parts Made in the USA

Breek Arms is dedicated to using the right components for the most reliable functioning AR builds. The most important part in your AR15 is the bolt carrier group. This is why we’ve found a superior BCG 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) to ensure you get a simple, no frill BCG that provides you with the reliability and performance you expect from a high end AR15. This BCG is rated for full-auto use, so you can be sure it will perform well in your semi-auto builds, and even in a full-auto build if you are lucky enough to have that opportunity.

Specs

  • 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: 9310
  • Profile: Full Auto Profile
  • Gas Key: Grade 8 Hardened Fasteners, Staked per MilSpec
  • Bolt is Magnetic Particle Inspected (MPI)
  • Gas Key Hardened to USGI Specifications
  • Fastened with Grade 8 screws
  • Staked Per Mil-Spec
  • Firing pin
  • Retaining pin 
  • Cam pin
  • All Parts Made in the USA

9 Reviews Hide Reviews Show Reviews

  • 5
    A Steal!

    Posted by Jonah Tyree on Jan 21st 2021

    I bought this for a budget AR I was building. When it arrived, it was pretty clear it was a PSA BCG, so it's cheaper but functional. Good finish, decent staking, ready to rock. What's really incredible is that Breek sells them cheaper than PSA. 10/10 would recommend for a budget gun.

  • 5
    300 blackout bcg

    Posted by John m. on Jan 13th 2021

    Super fast shipping
    Exactly what I ordered ordered a bcg and a t-shirt my favorite new shirt
    Great products will definitely order from breek arms again!!!!!

  • 5
    Great BCG

    Posted by Omar Karim on Nov 28th 2020

    Searched for milspec BCGs for a good price everywhere. Breek Arms doesnt offer a milspec BCG, they offer a better one, for less. Average 158 Carpenter steel in milspec BCGs is acceptable, the 9310 steel in this BCG is 7% is stronger than 158, and for $50 less than the inferior competition