Hammers TMS 90 degree FTS Quick Flip to Side Mount for 30mm Magnifier Scope 36MM CO WITNESS MOUNT HEIGHT Easy to operate push buttom release Quick 90degree flip by single hand Perfect alignment with EOTech sights of standard height Locks firmly in place at both ON and OFF positions This is 36mm co witness height model. For higher setup of magnifier scope, check out our 42mm HIGH mount that allows use of BUIS