DPM Mechanical Telescopic Recoil Reduction System for Springfield Hellcat 3" & Threaded Barrel 3.8" The DPM Telescopic Recoil Reduction System is a direct replacement for the stock recoil rod and does not change the configuration of the pistol.  The 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. **As we lead the evolution of recoil reduction technology, products may change versions (new design with different springs, with or without plugs, washers, etc.) without any prior notice.**  The spring plug must always be installed when the DPM Recoil Rod and springs are used.  Power rates Slide on the battery (idle position) Short Spring: 10lbs Medium: 11lbs  Long: 12lbs  Slide full open position (approx.) Short: 16lbs  Medium: 18lbs  Long: 20lbs Overall Advantages Faster follow up shots Improved firing speed Slide and Frame Protection Elimination of jams Significant recoil reduction Better double-tap concentration Better control and greater accuracy Lifetime Warranty.  For changes to features, like comp set-up, threaded barrels, slide conversions etc., contact us via email at info@dpmsystems.com before placing your order. In some cases, we need to determine whether a custom product is required. Video Installation Instructions