Generic Angle Sight with Standard Picatinny Mounts Rifle Scope Mount Plastic material.Magnification: 1.5x-4x;Objective lens diameter: 28mm .Length: 265mm F.O.V(FT/1000YDS):41.7-16.5; Eye Relief: 8.75-7.75in. Click Value: 1/4" The angle sight has dual path optics and allows the shooter to immediately transition from a concealed shot to a standard shoulder aimed shot without repositioning the optic on the weapon,allows aiming and firing around obstacles and corners, without having to put your life in the line of fire. It delivers a new capability to the urban combat tactical environment for safely identifying and engaging targets. Rrotates 360 and allows the shooter the flexibility to hold the weapon and aim through the side port at any direction: left, right, above, etc. In training, the side port allows an instructor the opportunity to see what the shooter sees and aid/coach as needed. It is a fully ruggedized 1x optical sight that is compatible with a wide variety of weapon sights including 1x tactical scopes, laser sights and iron sights. Fitted with a picatinny rail. The Angle sight is entirely optical, requires no zeroing.