GLOCK GEN 4 17 - 22 - 31 - 34 - 35 - 37 Gen 4 Luger The long spring is heavy

The long spring is heavy and the short is light so the shooter can fine tune the pistol on the opening and locking positions (slide on the battery)

the system offers almost double force in the slide at the end of the fully open position

Does not create its own carbon like other lubricants

DPM Telescopic Recoil Reduction System for Molot VEPR 12 Gauge Shotgun

GLOCK GEN 4 17 - 22 - 31 - 34 - 35 - 37 Gen 4 Luger The long spring is heavyDPM Mechanical Recoil Reduction System for Glock 17 22 31 34 35 37 Gen 4 This system works due to the multi springs intricate rod (3 springs) and controls the functionality of the pistol. The third spring, which is contained within the rod, controls the movement of the slide so it never rams on the frame. The system includes 2 different in length washers and 2 external springs. Washers differentiate only the buffer force (slide full open position) and