Sig Sauer P320-XFIVE PRO-CUT FULL-SIZE 9mm 5in Complete Pistol Slide Assembly Optic Ready Black. Featuring a 5" match-grade barrel and stainless steel slide construction for incredible accuracy and durability. It comes standard with a fiber optic front sight and adjustable rear sight which may be replaced with our PRO footprint optics such as the ROMEO2 or ROMEO-X PRO. The recoil system uses a solid steel guide rod and a 14lb 1911-style spring with an additional 12lb spring. Specifications for Sig Sauer P320-XFIVE PRO-CUT FULL-SIZE 9mm 5in Complete Pistol Slide Assembly: Manufacturer: SIG SAUER Gun Make: SIG Sauer Gun Model: SIG Sauer P320 X-Five Gun Frame Size: Full Size Color: Black Finish: Nitride Caliber: 9mm Luger Features of Sig Sauer P320-XFIVE PRO-CUT FULL-SIZE 9mm 5in Complete Pistol Slide Assembly: Included: Complete slide assembly 5.0" barrel guide rod and (2) recoil springs. Grip module compatibility: Both the full size X and non-X series. Only for use on 9mm/.357SIG/.40S&W fire control units (FCU). It will not function with a .45ACP FCU. Holster compatibility: Fits P320-XFIVE holsters. Slide material: Stainless Steel Finish: Slide- Black Nitron. Barrel Black Nitron. Package Contents: Sig Sauer P320-XFIVE PRO-CUT FULL-SIZE 9mm 5in Complete Pistol Slide Assembly SIG SAUER Infinite Guarantee What firearm models does the manufacturer say Sig Sauer P320-XFIVE PRO-CUT FULL-SIZE 9mm 5in Complete Pistol Slide Assembly is compatible with? The manufacturer suggests that Sig Sauer P320-XFIVE PRO-CUT FULL-SIZE 9mm 5in Complete Pistol Slide Assembly is compatible with SIG Sauer P320 X-Five