GLOCK GEN 4 17 - 22 - 31 - 34 - 35 - 37 Gen 4DPM 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

The System is included with 3 external springs

Use Aurora Store to install from the Google Play catalogue anonymously

The long spring is heavy and the short is light so the shooter can fine tune the pistol on the opening and locking position (slide on the battery) according his/hers personal standards

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The long spacer offers a heavy buffer effect

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Device Security

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149-GRAIN M80 FMJ V50-7

6 recoil springs