New release from Trijicon, optic mount with their Q-Loc Tech that allows easier mounting of optics that has been mounted before without the need to check its zero... "Trijicon's Cantilever Mount w/  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 Red Dot Sight from NcStar that comes with a Cantilever Mount is now available in Tan at Airsoft Atlanta... " Now in Tan. NcSTAR makes great airsoft red dot Sights with Cantilever Mount type, providing great unlimited eye relief. Good for wearing a full face mask. Black anodized aluminum metal construction. Has three brightness settings in multiple colors Red, Green, and even Blue Dot.