Norsso P365XL Rail EDC C Slide Black N365XL-RAILCOMP. 25 in 3.7 in Width: 0.875 in Height: 1.25 in Fabric/Material: Stainless Steel Features of Norsso P365XL Rail EDC C Slide Optic mount thread pitch: M4 x 0.7 Cosmetic/Lighting Porting Compensated barrel ports (C pattern) Package Contents: Norsso P365XL Rail EDC C Slide What firearm models does the manufacturer say Norsso P365XL Rail EDC C Slide is compatible with? The manufacturer says that Norsso P365XL Rail EDC C Slide is compatible with SIG Sauer P365 XLNorsso N365XL-RAILCOMP: P365XL Rail EDC C Slide Black