Trijicon Picatinny Rail for Accessory Ring Caps w/Q-LOC Technology - Short. The rail can be located at 12 o-clock or either 45 positions depending on the accessory being mounted. Features a Mil-Spec drop test rated 6061-T6 aluminum design. Designed to work with Trijicon Q-LOC style variable power mounts and accessory ring caps to create a full optics solution in one system. Specifications for Trijicon Picatinny Rail for Accessory Ring Caps w/Q-LOC Technology: Manufacturer: Trijicon Color: Black Gun Rail: Picatinny Package Contents: Trijicon Picatinny Rail for Accessory Ring Caps w/Q-LOC Technology What's in the box: 1 - Rail 2 - Screws 1 - Hex Key Trijicon AC22081: Picatinny Rail for Accessory Ring Caps w/Q-LOC Technology - Short