Norsso P365XL Spec Ops Slide Black N365XL-SOPS-507K-BLK. 125 in Width: 1 in Height: 1.375 in Fabric/Material: Stainless Steel Features of Norsso P365XL Spec Ops Slide Optic mount thread pitch: M4 x 0.7 Fully enclosed slide no cosmetic/functional...