Glock 20-21 Gen 4 New Version glass Breaker 5.25 inch This DPM system works due

This DPM system works due to the multi spring intricate rod (3 springs) and controls the functionality of the gun

ATTENTION: Read installation instructions before use

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) according to his/hers personal standards

0 Mesh with ATAK support

with the longer spring always being the stronger

Glock 20-21 Gen 4 New Version glass Breaker 5.25 inch This DPM system works dueDPM MECHANICAL RECOIL REDUCTION SYSTEM 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 rod controls the movement of the slide so it never rams on the frame. The system includes three different in length Washers, a Compressive Disc, a Safety Pin and three different power External Springs. The longer Washer offers a heavy buffer effect,