DPM Heckler & Koch VP-40 & SFP-40 Mechanical Recoil Reduction System Stainless MS H&K/2. This Recoil Reduction System by DPM features three springs (three operating groups) that are contained within the rod and control the functionality of the gun....
DPM Heckler & Koch VP-40 & SFP-40 Mechanical Recoil Reduction System Stainless MS H&K/2. This Recoil Reduction System by DPM features three springs (three operating groups) that are contained within the rod and control the functionality of the gun....