DPM Systems MS-SS/1:

Vratná pružina DPM pro Shadow Systems MR920 - DR920 - XR920 & Elite 9mm For Compensators, Silencers, Soft Ammo

IMPORTANT:

The Self-lock spring plug must always be installed when the DPM kit is used.

Power Rates

Slide on the battery (idle position)

    External Spring 1: 3.7 kgs / 8 lbs
    External Spring 2 : 4 kgs / 9 lbs
    External Spring 3: 4.4 kgs / 10 lbs

Slide full open position

    Buffer Spring 1: 8 kgs / 17 lbs (approx.)
    Buffer Spring 2: 9 kgs / 20 lbs (approx.)
    Buffer Spring 3:  10 kgs / 22 lbs (approx.)

For super soft ammo, comps and similar modifications, the user must not install any buffer spring.

In this case the system will offer in full open position 5.5 kgs / 12 lbs total power.