DPM Heckler & Koch VP-40 & SFP-40 Mechanical Recoil Reduction System Stainless MS H&K/2

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. The third spring within the DPM Mechanical Recoil Reduction System rod controls the movement of the slide so it never rams on the frame. The two external springs (one heavy and one Light) accompany this Recoil Reduction System. The lighter weight spri