DPM Systems Technologies Recoil Reduction System - Shadow Systems MR920 Elite

DPM MRS for Shadow Systems MR920 Elite 9mm Open Version This DPM System works with 3 different buffer recoil springs which each one offers different spring force (Forces are listed at the end of the description). The kit includes 3 different in length external springs, 3 buffer springs and 1 self-lock spring plug. The installation of the New Version remains the same as the older one, the user has to assemble the mechanism and select the combination of his/hers choice. 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