DPM FN Reflex Mechanical Recoil Reduction System 3.3in Barrel. 3" Barrel is a direct replacement for the stock recoil rod and does not change the configuration of the pistol. Important Notice: It is required to install the Spring Plug when using the DPM Recoil kit. As 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. Specifications for DPM FN Reflex 3.3in Barrel Mechanical Recoil Reduction System: Manufacturer: DPM Fabric/Material: Spring Steel Gun Make: FN Herstal Gun Model: FN Reflex MRD Features of DPM FN Reflex 3.3in Barrel Mechanical Recoil Reduction System 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 Package Contents: DPM FN Reflex 3.3in Barrel Mechanical Recoil Reduction System What firearm models does the manufacturer say DPM FN Reflex 3.3in Barrel Mechanical Recoil Reduction System is compatible with? The manufacturer suggests that DPM FN Reflex 3.3in Barrel Mechanical Recoil Reduction System is compatible with FN Reflex MRDDPM MS-FNH/7: FN Reflex Mechanical Recoil Reduction System 3.3in Barrel