Material: 7075 Aluminum Coating: Matte Black Hardcoat Overall Length: 1.811" Overall Width: .99" Mounting Hardware: (2) 6-32 Button Head Screws, (2) 6-32 Flat Head Screws, (1) 6-32 Set Screw Red Dot Fitment: Vortex Viper/Venom, Burris FastFire, Crimson Trace CTS-1200, CTS-1300, Docter EGW's red dot sights are meant to be installed from the left to the right (with the muzzle facing forward). The dovetail has a progressive taper to allow for easier install. Simply remove the rear sight on your gun and replace it with our mount in order to mount yourVortex Viper/Venom, Burris FastFire, or Docter red-dot sight. No alterations are required. Mfg: Egw