DPM SIG Sauer P290 RSDPM Mechanical Recoil Reduction System for SIG P290 RS SKU: 1000089 EAN: 5213007220240 MPN Code: MS SI 9 The DPM Mechanical Recoil Reduction System is a direct replacement for the stock recoil rod and does not change the configuration of the gun. This 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