IRON JIA'S Compact Adjustable Red/Green Dot Laser sight with Mount for 20mm /11mm Picatinny Rails Airsoft Hunting Solid all metal construction.Easy to install with the included tool. Class 3A laser (2mw) ,Compact design, easy to attach to existing sights and optics Windage and elevation adjustable (tool included) Mounts included for 20mm Picatinny / Weaver or 11mm Dovetail rails NOTE:Without Battery.