22lr Barrel Tuner. 

Barrel tuner for 22lr rifles machined from high quality stainless then polished 

These are high precision machined items

threaded 1/2x28 and 1/2x20

Small shank diameter is 0.85 inches and the large shank is 1.0

Set screw installed at the top for easy adjustment no longer having to play with rings or washers

Weight is 5.2oz

For custom threads send me a message on eBay 

Now with laser etched lines!