The only issue with that is the OD. The Shepherd is 1.5". He needed no more than 1.375". But it IS a screaming good deal. Also, @SouthernSlammed , watch your barrel thread pitch. I know you listed 1/2x28, which is most 9mm pistols, but a lot of 9mm PCC's are 1/2x36. I know Ballistic Advantage...