The Trijicon VCOG Cantilever Mount w/ Trijicon Q-LOC Technology features a Mil-Spec drop test rated 6061-T6 aluminum design with an easy to use one handed toolless mounting system. The spring-loaded design allows for constant retention and maintaining of zero even if the knobs are not tightened. - This mount boasts a low weight and low profile design with precisereturn to zero performance and is compatible with any Mil-Spec or NATO Picatinny rail. - Designed specifically for the Trijicon VCOG. This lightweight mount is perfect for mounting the VCOG on any firearm platform with a picatinny rail and allows users to adjust the location of the optic to obtain proper eye relief. - Matte Black Anodized Finish - Made in the USA