Barrel Adapter for S&W M&P15-22 with Non-threaded Barrels


Convert your non-threaded barrel to a standard 1/2-28 thread to mount threaded accessories such as muzzle brakes, flash suppressors, or unrestricted fake flash suppressors.

SKU: BA2-NTB-1522-M Categories: , Brand:


This threaded barrel adapter converts your non-threaded barrel to a standard 1/2-28 thread for all your end-of-barrel accessories. If you want to get the full fun factor out of your Smith & Wesson M&P15-22, you need to be able to mount any 1/2-28 threaded accessory such as a muzzle brake, flash suppressor or compensator, or fake flash hider.

This thread adapter easily attaches to the factory finished plain muzzle, and is less expensive than going to a machinist or gunsmith. Plus you can do it yourself in minutes, and it can be taken off quite easily. If you want to thread your barrel later, the installation marks will be machined away.

NOTE: This is the adapter only; you will need to purchase the end-of-barrel accessory and crush washer separately.


  • The largest diameter is a little larger than the current A2 Birdcage and similar flash suppressors.
  • MIL-SPEC black oxide finish for years of trouble free service.
  • This may fit other barrels, but is intended solely for the Smith & Wesson M&P 15-22 plain muzzle.
  • Designed, developed, and manufactured in the USA.

Additional information

Weight 0.25 lbs


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