BCA's 1x20 Red Dot sight gives you the best, most robust, compact red dot sight with 1x aiming solution optimized for your AR. With an ultra low parallax so point-of-aim is the point-of-impact and the red dot remains parallel to the bore of your firearm, no matter what your viewing angle is. Unlimited eye relief allows you to acquire the point and the target regardless of the position of your eye behind the sight.Product Description1x20 Scope Compact Riflescopes Red Dot Sight Objective Diameter 20mmFeatures:High quality full metal bodyGreen and red two switches new stylePull-out style battery house Specifications:MAGNIFICATION: 1xOBJECTIVE LENS DIAMETER (MM): 20ADJUSTMENT INCREMENTS: 1.0 MOATOTAL ELEVATION TRAVEL: 100 MOATOTAL WINDAGE TRAVEL: 100 MOARETICLE: 2 MOA Red DotCENTER DOT SIZE: 2 MOAMaterialAluminum Alloy