Bushnell AR Optics 1x25mm TRS-25 HiRise 3 MOA Red Dot Sight w/ Mount Box. 11 brightness settings provide optimum illumination in any light condition. The supplied riser block positions the Bushnell T.R.S. 25 Red Dot Scope at optimum height on flat top ARs and tactical shotguns. This sight by Bushnell was leading the charge for 2013. The Bushnell 1x M.P. Red Dot Scope conserves battery life by self regulating brightness based on available light and power down when the protective storage hood is attached. Specifications for Bushnell AR Optics 1x25mm TRS-25 HiRise 3 MOA Red Dot Sight: Manufacturer: Bushnell Color: Black Finish: Matte Magnification: 1 x Objective Lens Diameter: 25 mm Reticle: 3 MOA Illumination Type: LED Illumination Color: Red Brightness Settings: 11 Eye Relief: Unlimited Adjustment Click Value: 0.5 in at 100 yds Emitter Type: Enclosed Battery Type: CR2032 Water Resistance Level: Waterproof Gun Model: AR-15 Length: 2.4 in Weight: 6.3 oz Condition: New Package Type: Box Magnification Type: Fixed Red Dot Sights-Footprint: Not Applicable Overall Length: 2.4 in Objective Aperture: 25 mm Mount Type: Weaver Attachment Type: Weaver Features of Bushnell T.R.S. 25 Hi Rise Red Dot Sight: 3 MOA Red Dot Multi-coated optics Amber-Bright high contrast lens coating 100percent waterproof/fogproof/shockproof construction CR2032 battery Package Contents: Bushnell AR Optics 1x25mm TRS-25 HiRise 3 MOA Red Dot Sight Bushnell AR731306: AR Optics 1x25mm TRS-25 HiRise 3 MOA Red Dot Sight w/ Mount Box