Walther Competition II Top Point Sight 24mm objective lens Green dot 10 MOA 2 brightness settings + off switch Windage & elevation adjustments 10m parallax setting Integral Weaver/Picatinny mount 3.35Lx1.38Wx1.57H 1.90 oz. Includes 3V CR2032 battery Walther"s green dot sight isn"t very tall, which makes for a nice low line of sight. Attach the Competition II Top Sight to any airgun or airsoft gun that has a Weaver/Picatinny rail.