Gunsmith Universal 1/2-28 Thead Adapter

Here is your solution for having 1/2-28 threads on firearms that are difficult to thread-using this adapter, there is no need to move the front sight in many cases...this is the one we use on the Smith & Wesson model 41 barrels with great success. Also great for limited space applications and for a sleek look since it uses a 1/4" allen wrench for installation and removal-no wrench flats here! The threads that need to be cut in the barrel for this adapter are 17/32-32 TPI. LH. The best part of that is that LH internal threads are among the easiest to cut on a manual lathe! For use with .22 rimfire firearms only. Proudly made in the USA!