This is a high performance porting package for the Smith and Wesson M&P 4.25 and 5 inch 9MM variants only!
Venting the most volume compared to our other porting, the DIMEBAG is our most aggressive porting package yet at 60-100 fps in velocity loss. In return, your DIMEBAG M&P will become one of the flattest guns you’ll ever shoot!
As stated, this is a high performance porting system that vents a whole buncha’ gas. In our testing it has been reliable with the OEM barrel and spring, but there still could be potential for needing to tune then gun on a case by case basis!