SightMark XTM-3 Magnifier 3x18mm Black. Sightmark offers the lightest most compact magnifier in the market today. Weighing only 8.1oz this 3-inch long magnifier has an 18mm objective lens and provides 3x magnification to a wide variety of rifle-mounted red dot sights. Outfitted with a no-nonsense flip-to-side mechanism as well as a simple locking quick detach mount the XTM-3 is designed with practicality and ergonomics in mind. Constructed with shockproof 6061 aluminum housing with an IPX7 waterproof rating and a nitrogen-filled chamber to eliminate fog the XTM-3 Magnifier is a quality magnifier thats built to last. The XTM-3 Magnifier from Sightmark is the lightest most compact magnifier in the market. This 3x magnifier is nevertheless built with the same high quality standards as all Sightmark products. Built with shockproof 6061 aluminum housing with an IPX7 waterproof rating and a nitrogen-filled chamber to eliminate fog the XTM-3 Magnifier is a quality magnifier thats built to last. Specifications for SightMark XTM-3 3x18mm Magnifier: Manufacturer: SightMark Magnification: 3 x Objective Lens Diameter: 18 mm Length: 3 in Weight: 8.1 oz Optical Coating: Multi-Coated Fabric/Material: 6061 Aluminum Color: Black Condition: New Water Resistance Level: IPX-7 Last Chance: Yes Features of SightMark XTM-3 3x18mm Magnifier Most compact magnifier on the market Lightest weight magnifier on the market Locking Quick Detach mounting platform for quick and easy mounting/removal Waterproof and dustproof Fully multi-coated optics Increases magnification of accompanyingsights for greater engagement range Finger adjustable windage and elevation for reticle alignment Compatible with most red dots and reflex sights Improved target recognition especially medium range targets Package Contents: SightMark XTM-3 3x18mm Magnifier SightMark SM19065: XTM-3 Magnifier 3x18mm Black