USED Trijicon 30mm Ring Cap for Mounts with Q-LOC Technology Black. Three mounting locations allow red dot or picatinny rail mounting plates to be attached at 12 o-clock or 45 positions . Features a Mil-Spec drop test rated 6061-T6 aluminum design. Designed to integrate with Trijicon Q-LOC style variable power mounts this lightweight cap is perfect for adding additional optics or components creating a full optics solution in one system. Specifications for Trijicon Ring Cap for Mounts with Q-LOC Technology: Manufacturer: Trijicon Base/Mount Type: QD mount Gun Model: Universal Fabric/Material: 6061-T6 Color: Black Cant: 0 MOA Gun Make: Universal Package Contents: Trijicon Ring Cap for Mounts with Q-LOC Technology What's in the box: 1 - Ring Cap 4 - Screws 1 - Hex Key Trijicon AC22078: 30mm Ring Cap for Mounts with Q-LOC Technology Black