Single Port Short Outside Thread Muzzle Brake - Available: 30 cal, 9mm, 45 cal

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  • Thread Adapter 45 Cal - .578 x 28 to 5/8 x 24
  • Thread Adapter 9mm Sig - 13.5x1LH to 5/8x24
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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. 

9 Reviews Hide Reviews Show Reviews

  • 5
    Great Quality!

    Posted by CL on Jan 29th 2021

    Perfect fit and goes very well with the Blast shield.

  • 5

    Posted by DWK on Jan 3rd 2021

    looks great and functions as expected.

  • 5

    Posted by Aaron on Nov 11th 2020

    Super compact perfect for my AR pistol build