Nikko Stirling Reflex Red Dot Sight 1x 35 MOA Red Dot Matte Black NDSMRSL. It is a closed tube system with an integrated weaver mount. Specifications for Nikko Stirling NDMRSL 1x Reflex Red Dot Sight: Manufacturer: Nikko Stirling Color: Black Finish: Matte Magnification: 1 x Reticle: 3.5 MOA Illumination Type: LED Illumination Color: Red Eye Relief: Unlimited Emitter Type: Enclosed Lens Material: Glass Optical Coating: Multi-Coated Weather Resistance: Yes Water Resistance Level: Waterproof Shockproof: Yes Fogproof: Yes Length: 70 mm Weight: 144 g Quantity: 1 Red Dot Sights-Footprint: Not Applicable Features of Nikko Stirling NDMRSL 1x Red Dot Sight Parallax free Waterproof - shockproof 1x magnification Integrated weaver mount Optimized coatings Click adjustments Bright illumination 35 MOA red dot Package Contents: Nikko Stirling NDMRSL 1x Reflex Red Dot Sight Lens Cover Lens Cloth Manual Nikko Stirling NDSMRSL: Reflex Red Dot Sight 1x 35 MOA Red Dot Matte Black