The HM3XT Magnifier by Holosun delivers a seamless transition between close and mid-range shooting. When not in use, the HM3XT flips to the side, allowing the shooter to use a red dot or holographic sight for aiming at close range, but can be deployed instantly for targets at a distance. The HM3XT features a Titanium body for extreme durability and has a IP67 water resistance. QD release mount and T10 L Key included. Features of the HM3XT Magnifier Durable titanium housing Flip-to-side design QD mount and spacer included