TMS Tactical 3x Magnifier Scope with Quick Flip to Side FTS Mount 36mm Center Height for Red Dot Sights and EOTech Sights Instantly converts a CQB red dot sight into a 3x long range sniping scope Adjustable windage and elevation to center red dot without changing Zero 30mm mounting tube. Fully coated lens for the best optical performance Includes 90degree FTS quick flip to side mount of 36mm center height that aligns with most EOTech sights of standard height. Be sure to check the center height of your mounted red dot sight. Should be 36mm or slightly more and less. Check out 42mm model in our store should you need a taller setup, especially when using BUIS the same time