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

$99.99
(4 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

Out of stock

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

4 Reviews Hide Reviews Show Reviews

  • 5
    Solid Component

    Posted by Jonah Tyree on Mar 31st 2020

    I was considering spending more money on something like Aero Precision, but decided to give Breek another try, and yet again, I surprised with the value of their products. I believe this is actually a PSA bolt. It it very solid, and feels like it can be run hard. The finish is nice, and glides nicely before I even oiled it down. Would/will buy again.