This Sig Sauer P320-XFIVE complete 5" slide offers the ultimate in competitive firearm slides. 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. FeaturesIncluded: 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.Finish: Slide- Black Nitron. Barrel Black Nitron.Comes fully assembled.