DPM Mechanical Recoil Reduction System Adjustable Smith & Wesson M&P Compact 4.22in Barrel

DPM Mechanical Recoil Reduction System Adjustable Smith & Wesson M&P Compact 4.22in Barrel. Also it is compatible for low power ammunition. The system works due to the multi spring intricate rod (3 springs) and controls the functionality of the gun. The third spring which is contained within the rod controls the movement of the slide so it never rams on the frame. Package Contents: DPM Mechanical Recoil Reduction System What firearm models does the manufacturer say DPM Mechanical Recoil Reductio