Designed to mount directly behind a reflex sight or red dot, the versatile T-3 Magnifier allows a quick and easy way to magnify your sight picture by 3x and provides an absolute co-witness. The T-3 features a streamlined, low drag design, preventing the magnifier from snagging on equipment in important situations. Ideal for engagements up to 100 yards, if a close-range shooting scenario calls for no magnification, simply use the T-3's flip-to-side mount to rapidly transition between the optic systems.