DPM 5in Bushing Barrel 10mm Auto / 460 Rowland Mechanical Recoil Reduction System 12 Adjustable Settings. The system works due to the multi spring intricate rod (3 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. The system includes 2 different spring plugs and 2 sets of 3 (1.10mm & 1.15mm wire diameter) external springs. The adjustable spring plugs offers two different buffer forces (slide full open position) and the external springs differentiate only the slide closed position (slide on the battery). The 1.10mm springs are softer than the 1.15mm springs. 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. Specifications for DPM 1911 5in Bushing Barrel 10mm Auto / 460 Rowland Mechanical Recoil Reduction System: Manufacturer: DPM Fabric/Material: Spring Steel Gun Make: 1911 Platform Gun Model: 1911 Features of DPM 1911 5in Bushing Barrel 10mm Auto / 460 Rowland 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 1911 5in Bushing Barrel 10mm Auto / 460 Rowland Mechanical Recoil Reduction System What firearm models does the manufacturer say DPM 1911 5in Bushing Barrel 10mm Auto / 460 Rowland Mechanical Recoil Reduction System is compatible with? The manufacturer suggests that DPM 1911 5in Bushing Barrel 10mm Auto / 460 Rowland Mechanical Recoil Reduction System is compatible with 1911DPM MS-1911/10MM: 1911 5in Bushing Barrel 10mm Auto / 460 Rowland Mechanical Recoil Reduction System 12 Adjustable Settings