DPM Steyr M-A1/ A2 Full Size Mechanical Recoil Reduction System 9x19 40S&W MS-ST/1. This system works due to the multi spring intricate rod (three springs) and controls the functionality of the pistol. The third spring which is contained within the...
DPM Steyr M-A1/ A2 Full Size Mechanical Recoil Reduction System 9x19 40S&W MS-ST/1. This system works due to the multi spring intricate rod (three springs) and controls the functionality of the pistol. The third spring which is contained within the...