My Account

product categories

Site Information

Custom Muzzle Brakes AR-15 Muzzle Lock Nut

  • Muzzle Brake Lock Nut
  • Image 2
  • Image 3
  • Image 4
  • AR-15 Muzzle Lock Nut
  • Image 6

Custom Muzzle Brakes AR-15 Muzzle Lock Nut

Product Code:
Calculated at checkout
$14.50 $12.59

Find Similar Products by Category



  • Align muzzle devices at ease with no special tool
  • Protects muzzle and threads
  • Reusable
  • Made in USA


  • Material: Hardened steel
  • Finish: Mil-Spec Black Finish
  • Weight: 0.4 oz.
  • Length: 0.5"
  • Diameter:
    • Inside: 0.77"
    • Outside: 0.88"
  • Thread: 1/2"-28


Custom Muzzle Brakes is your go-to manufacturer for quality muzzle devices that you can count on. Doesn’t it make sense to buy the mounting accessories you need for the installation of your brake from them too? When you want a Muzzle Brake Lock Nut, Custom Muzzle Brakes offers a quality retention nut you can count on.

The Custom Muzzle Brakes AR-15 Muzzle Lock Nut is a quality lock nut for the application of muzzle devices for the AR-15 platform. Using a lock nut makes timing and installing a muzzle brake much easier than it might be if you had to guess where to put a cone washer. Unlike crush and peel washers Custom Muzzle Brake’s rifle Muzzle Lock Nuts are reusable and infinitely repositionable. The design of these nuts is such that they protect the threaded barrel area behind the muzzle.

All you need to do to apply your muzzle device using a lock nut is to apply the nut ahead of your device, and screw on the device after it. When the device is applied properly back the lock nut up to it and tighten the two together. The Lock nut and muzzle device will snug up against one another, creating a locking effect holding the muzzle device firmly in place. Some applications may require a bit of liquid thread lock.

The Custom Muzzle Brakes Muzzle Brake Lock Nut is finished in Mil-Spec black to blend into your build flawlessly. Made in the USA by American craftsmen, this hardened steel lock nut is the only retention accessory you’ll ever need.

Stype300install 00:59
  • Stype300install
    Installation of the S-Type 308 (S6) Muzzle Brake on a custom 3...
Write Review

  1. Muzzle Lock Nut 5 Star Review

    Posted by on 9th Sep 2017

    The best locking nut ever no more crush washer love how fit over the barrel

  2. It's a nut 5 Star Review

    Posted by on 20th Aug 2017

    Not much to say. It's a jam nut. Works well, does exactly what it's supposed to do.

  3. Custom Muzzle Brakes AR-15 Muzzle Lock Nut 5 Star Review

    Posted by on 10th Jul 2017

    this is best nut i have ever use work great no more crush washer for me

  4. Don't think I'll be using crush washers again 5 Star Review

    Posted by on 18th Apr 2017

    This really couldn't have been easier to get the timing right. Works great, nice quality.

Back to Top