Evolution Gun Works Vortex Razor Sight Mount Colt Gold Cup Black. These Red Dot Sight Mounts by Evolution Gun Works greatly improve the mounting capabilities of your sight since it has a Novak-style cut that increases its strength and durability. The Evolution Gun Works Vortex Red Dot Sight Mounting Rail is a one-piece mount that's constructed aluminimum while the rest of the mount is made from steel. Pick up the Evolution Gun Works Vortex Razor Mount for a trusted mounting solution for your sight. Specifications for Evolution Gun Works Vortex Razor Sight Mount: Manufacturer: Evolution Gun Works Color: Black Fabric/Material: Aluminum Length: 1.831 in Mount Type: Dovetail Package Contents: Evolution Gun Works Vortex Razor Sight Mount Evolution Gun Works 49441: Vortex Razor Mount for Colt Gold Cup Black