Thread Adapter - 13.5x1LH to 5/8x24

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Breek Arms offers a low cost option for thread adapters, which allow you to convert your uncommon barrel thread pattern to something more available on the market such as the Sig MPX. Our M13.5x1LH thread turns your barrel into a very common 5/8x24 thread that is available at most shops. This works great for opening up your options for any M13.5x1LH barrels. We offer every styles of muzzle brakes our common thread 5/8x24 but only a couple have exit holes that will allow for a 9mm or 45 cal round to exit properly. See these two listings below.

Both the flash hider and muzzle brake have outside threads which allows you to quickly detach your own Breek Arms Blast Shield or suppressor.

  • Design: Thread adapter 9mm or 45 Cal Conversion
  • Female Thread: M13.5 x 1 LH
  • Outside Thread: 5/8 x 24 TPI
  • Material: Pre Hardened Steel
  • Overall length: 0.95"
  • Weight: 0.7 oz
  • Adds approximately 0.325" inches to the overall length of your barrel

WARNING: Most 5/8x24 threads are for made for 30 calibers. Please make sure to double check you are using at least a 9mm exit hole when installing this adapter.