BLEM Single Port Short Outside Thread Muzzle Brake - Available: 30 cal 5/8x24, 30 cal M14x1LH

(7 reviews) Write a Review
In Stock
  • Thread Adapter 45 Cal - .578 x 28 to 5/8 x 24
  • Thread Adapter 9mm Sig - 13.5x1LH to 5/8x24
Adding to cart… The item has been added

*BLEM units have tight threads on the outside and sometimes on the inside. They are fully functional with our Blast Shields and are free from cosmetic defects. Our Breek Arms Warrany still applies! If you don't see your caliber or thread pattern, check our non blem item listing.


Try out Breek Arms newest addition to its popular Outside Threaded Muzzle Device Family! The Single Port Short OT Muzzle Brake offers a low cost option to competitive muzzle brake designs used for increasing muzzle control as well as adding a custom design to your platform. The combination of ports and holes helps disperse gases up, left and right to reduce the level of muzzle climb and felt recoil. Also, the included outside thread allows you to quickly detach your Breek Arms Blast Shield.

  • Design: Single Port Short OT Muzzle Brake (outside thread) 
  • Outside Thread: 13/16" x 16 TPI
  • Material: 4140 Steel Nitrided
  • Comes with 1 Crush Washer & 1 Lock Washer
  • Overall length: 1.50"
  • Adds approximately 1 inch to the overall length of your barrel
  • Port Size: 0.31"x0.51"


  • Cal: 223/556; Thread: 1/2x28; Weight: 1.7 oz 
  • Cal: 30cal; Thread: 5/8x24; Weight: 1.2 oz
  • Cal: 9mm; Thread: 1/2x28; Weight: 1.4 oz
  • Cal: 9mm; Thread: 1/2x36; Weight: 1.4 oz
  • Cal: 45cal; Thread: 5/8x24; Weight: 1.1 oz (pair with our thread adapter for .578x28 barrel threads)
  • Cal: 30cal; Thread: M14x1LH (Fits AK47 & other variants); Weight: 1.4 oz
  • Cal: 30cal; Thread: M14x1RH (Fits VZ58 & threaded SKS rifles); Weight: 1.4 oz

     *weights include 1 crush washer


NOTE: These parts are not designed as precision mounts for suppressors, they are designed to work well with our Blast Shield. The threading is cut a little looser to ensure the Blast Shield can be threaded on and off quickly. 

7 Reviews Hide Reviews Show Reviews

  • 5
    short muzzle break

    Posted by nate on Nov 8th 2021

    Bought a blem single port muzzle break came faster then expected and cant find why its a blem

  • 5
    Blem single port muzzle brake!

    Posted by Brian on Oct 11th 2021

    If its a blem I sure can't tell! Great short muzzle brake for the money!

  • 4
    Great muzzle brake and amazing fast shipping

    Posted by Justin on Sep 22nd 2021

    Love your company and your product thank u

  • 5
    Great product, great company

    Posted by SOCOM_HERO on Jul 13th 2021

    Can't tell from new, great small/lightweight brake, especially when paired with the blast shield. Minimizes flash down to that of about a rifle length normal flash hider on a 10.5" AR pistol. No sideways concussion.

  • 5
    Single port break for 308

    Posted by Bruce on Jul 9th 2021

    I bought this for my Ruger Scout bolt action. High quality for the price. I also purchased the blast shield. I like the fact that the single port break is shorter than the factory flash hider even with the blast shield. Hopefully next week will shoot the rifle to evaluate the break and blast shield. Cheers

  • 5
    good product

    Posted by jason miller on May 25th 2021

    works great, good service and fast shipping. Showed up two days early.