IRON JIA'S Tactical Red Laser Dot Collimator Sight 11mm / 20mm Mount On Off & Remote Pressure Switch Durable all metal construction.Class 3A laser sight(less than 5mw) CXJG-2/R RED LASER sight with on/off or remote push switch X-Y Windage & Elevation Adjustment.Constructed by aluminum alloy with anodized matte black processing. Light weight and compact design.Easy to hook up, install in just seconds. Note:without Battery