DPM FN 545/FN 510 MRD 4.1in/Tactical 4.71in Barrels Adjustable Mechanical Recoil Reduction System. Specifications for DPM FN 545/ FN 510 MRD 4.1in / Tactical 4.71in Barrels Adjustable Mechanical Recoil Reduction System: Manufacturer: DPM Fabric/Material: Spring Steel Gun Make: FN Herstal Gun Model: FN 510 FN 545 Features of DPM FN 545/ FN 510 MRD 4.1in / Tactical 4.71in Barrels Adjustable 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 545/ FN 510 MRD 4.1in / Tactical 4.71in Barrels Adjustable Mechanical Recoil Reduction System What firearm models does the manufacturer say DPM FN 545/ FN 510 MRD 4.1in / Tactical 4.71in Barrels Adjustable Mechanical Recoil Reduction System is compatible with? The manufacturer says that DPM FN 545/ FN 510 MRD 4.1in / Tactical 4.71in Barrels Adjustable Mechanical Recoil Reduction System is compatible with FN 545 FN 510DPM MS-FNH/9: FN 545/FN 510 MRD 4.1in/Tactical 4.71in Barrels Adjustable Mechanical Recoil Reduction System