DPM CZ 75 B-BD/85B Standard Size Mechanical Recoil Reduction System Stainless. The third spring which is contained within the rod controls the movement of the slide so it never rams on the frame. Also 2 separate external springs are included with the system. The springs are different in length with the longest being heaviest when the slide is on the battery so the shooter can fine-tune the weapon for his/hers personal standards. Specifications for DPM CZ 75 B-BD/85B Standard Size Mechanical Recoil Reduction System: Manufacturer: DPM Color: Stainless Finish: Black Oxide Fabric/Material: Stainess Steel Gun Make: CZ Gun Model: CZ 85 B CZ 75 BD CZ 75 B Features of DPM CZ 75 B-BD/85B Standard Size 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 CZ 75 B-BD/85B Standard Size Mechanical Recoil Reduction System What firearm models does the manufacturer say DPM CZ 75 B-BD/85B Standard Size Mechanical Recoil Reduction System is compatible with? The manufacturer suggests that DPM CZ 75 B-BD/85B Standard Size Mechanical Recoil Reduction System is compatible with CZ 75 B CZ 75 BD CZ 85 BDPM MS-CZ/3: CZ 75 B-BD/85B Standard Size Mechanical Recoil Reduction System Stainless