DPM Sig Sauer P220 Swiss Army Special Edition Mechanical Recoil Reduction System 9mm

DPM Sig Sauer P220 Swiss Army Special Edition Mechanical Recoil Reduction System 9mm. The spring plug with the marked groove is offering a heavier buffer effect and the spring plug with flat surface offers a lighter buffer effect (slide full open position). The spring plug must always be installed when the DPM Recoil Rod and springs are used. As lead the evolution of recoil reduction technology products may change versions (new design with different springs with or without plugs washers etc.) wi