Ideal for both standard weapons and assault rifles these Red dots are among the the most professional units of their entire category. each model comes with an array of innovative features that will satisfy even the most demanding users. Features• Red/green dot sight• 8 interchangeable reticles• rechargeable via the enclosed USB cable• M.O.A. dot size from 2-5 according to the reticle• Dual mount suitable for 7/8 inch and 3/8 inch rail SpecificationsDiameter: 39x27mmLength: 108mmWeight.: 245gDot size: 2 MOA - 5 MOA