Trijicon RMRcc Lower 1/3 Co-Witness Mount w/Q-LOC Technology Black. This Return to Zero mount boasts a low weight and low profile design compatible with any Picatinny rail. Designed specifically for the Trijicon RMRcc. This lightweight Lower 1/3 Co-Witness mount is perfect for mounting a Triijicon red dot using the RMRcc footprint on any rifle platform with a Picatinny rail. The AC32111 provides a Lower 1/3 Co-Witness with backup iron sights. This means that the RMRcc is mounted higher than the iron sights resulting in a clearer field of view. The iron sights remain visible in the lower 1/3 of your optical window for use as a backup. Specifications for Trijicon RMRcc Lower 1/3 Co-Witness Mount w/Q-LOC Technology: Manufacturer: Trijicon Color: Black Fabric/Material: 6061-T6 Aluminum Co-Witness: Lower 1/3 Red Dot Sights-Footprint: RMR Optic Cut: Not Applicable Housing/Frame Material: 6061-T6 aluminum Package Contents: Trijicon RMRcc Lower 1/3 Co-Witness Mount w/Q-LOC Technology What's in the box: 1 - Mount 2 - Screws 1 - Hex Key Trijicon AC32111: RMRcc Lower 1/3 Co-Witness Mount w/Q-LOC Technology Black