Check the listing for details. Smith & Wesson M&P22 COMPACT 22LR 1/2x28 Thread Adapter. Condition: New. Listed at 24.95 USD. 1/2 x 28 TPI Adapter THIS IS NOT A MAGAZINE, GUN, THREADED BARREL OR BARREL SHROUD! Auction is for one (1) 1/2x28 thread adapter for the S&W M&P 22 COMPACT pistol and NOT a Rifle. VERIFY WHAT YOU OWN BEFORE YOU BUY! This adapter is ONLY for the COMPACT model of the M&P22 pistol and NOT the full sized model (See my other listings for the full sized model). The thread adapter screws onto the factory threads of the barrel and allows you to install muzzle devices with the 1/2 x 28 threads per inch thread pattern. Constructed of 4140 Alloy Chromoly Steel With Black Oxide (blued) Finish. Any 11mm open end wrench found in a standard tool set will work to install and remove this adapter.See my YouTube Channel "NicTaylor00" for more parts. Sorry, I can not ship out side the US.WHAT YOU GET 1 x Steel Adapter with Black Oxide (blued) Finish 1 x Fluted Steel Thread Protector Installation instructions: Remove factory thread protector and screw on the thread adapter.