Trijicon’s 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 precise return to zero performance and is compatible with any Mil-Spec or NATO Picatinny rail. – Designed specifically for variable powered optics this lightweight mount is perfect for mounting Trijicon variable powered tube scopes with an objective lens up to 56mm on any firearm platform with a picatinny rail. – Matte Black Anodized Finish – Made in the USA