Awesome addition - DPM Walther P99/PPQ M2/Long Slide Mechanical Recoil Reduction System

Had my questions. Does this really work? I found that the DPM Recoil system does in fact reduce felt recoil but does it make any major changes? Yes
I use the Mantis X system when dry fire and live fire training to check my movement and recoil during training. The mantis showed me consistent numbers against the numbers of the original recoil spring in my handgun. I tested them with each spring and found that although I thought the provided spring gave me the reduced most recoil reduction, it was in fact the middle spring that worked the best. I switched to the middle spring and found out my groups drastically reduced over distance and back on-sight the quickest.