Trijicon Cantilever Mount w/Q-LOC Technology - 30mm 1.93 in. Black. Featuring a Mil-Spec drop test rated 6061-T6 aluminum design and an easy to use one handed tool less mounting system. The spring-loaded design allows for constant retention and maintaining of zero even if the knobs are not tightened. The mount boasts a low weight and low profile design with superior return to zero performance and is compatible with any Mil-Spec or NATO Picatinny rail. Designed specifically for variable power optics this lightweight mount is perfect for mounting Trijicon Variable power optics with an objective lens up to 56mm on any weapon platform with a full Picatinny rail. Specifications for Trijicon Cantilever Mounts with Q-LOC Technology: Manufacturer: Trijicon Fabric/Material: 6061-T6 Aluminum Color: Black Base/Mount Type: Cantilever Ring Mount Cant: 0 MOA Ring Height: 1.93 in Quantity: 1 Finish: Matte Package Contents: Trijicon Cantilever Mounts with Q-LOC Technology What's in the box: 1 - Mount 2- Ring Caps 8 - Screws 1 - Hex Key Trijicon AC22051: Cantilever Mount w/Q-LOC Technology - 30mm 1.93 in. Black