EZ Lok rear mount
This item allows for use of a caliber specific suppressor to be used on both a 1/2x28 and a 5/8x24 threaded barrel. I would also applaude the CSR that helped me out with solving the issue I had with my 22 Mag rifle having different barrel end threads than my 22 LR pistol, as I wanted to use the suppressor on both weapons.