Trijicon, Extra High Mount, Quick Release, Fits Trijicon ACOG, Anodized Finish, Black NEW Quick-Release, Return-To-Zero Automatic Retention Keeps Optic Secure Snag-Resistant Knob Design Precision-Cut Dimensions Proven Durability Product Description The Trijicon ACOG Extra High Mount with 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 heads up shooting with the Trijicon ACOG.