DPM IG P365XL Spectre Comp/ XMacro Mechanical Recoil Reduction System Stainless. Also included with the system are 4 powered external springs and 2 different sized spring plugs. so the shooter can fine-tune the weapon for his/hers personal standards. These external spring have effect also in the total force of this recoil system. The longer spring (more coils) is stronger and has a heavier pound rating than the shorter spring. Compatible models: P365 - XMacro P365 - XMacro Tacops P365 - XMacro Comp P365XL Spectre Comp P365XL Comp Rose Specifications for DPM IG P365XL Spectre Comp/ XMacro Mechanical Recoil Reduction System: Manufacturer: DPM Color: Stainless Fabric/Material: Stainess Steel Gun Make: SIG Sauer Gun Model: SIG Sauer P365 X-Macro SIG Sauer P365 XL Features of DPM IG P365XL Spectre Comp & XMacro Special Edition Soft Version 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 IG P365XL Spectre Comp/ XMacro Mechanical Recoil Reduction System What firearm models does the manufacturer say DPM IG P365XL Spectre Comp/ XMacro Mechanical Recoil Reduction System is compatible with? The manufacturer says that DPM IG P365XL Spectre Comp/ XMacro Mechanical Recoil Reduction System is compatible with SIG Sauer P365 XL SIG Sauer P365 X-MacroDPM MS-SI/31: IG P365XL Spectre Comp/ XMacro Mechanical Recoil Reduction System Stainless