The Holosun LS221R is a 7075 Aluminum bodied multi- laser aiming device. Zeroing is easy with the coaxially mounted class IIIA visible red laser and a class 2M IR laser. With a quick release picatinny rail mount, a remote pressure switch and IP67 water resistance level, this coaxial laser is the perfect addition to any rifle or PDW. In the Box: QD Release MountRemote Cable SwitchT10 L KeyCR123A BatteryUser ManualFeatures of the Holosun LS221RCoaxial Red and IR Laser PointerHigh/Low Brightness SettingRemote Cable SwitchQuick Release MountIP67 Waterproof Holosun LS221R& IR Coaxial Red and IR Laser Sight w/ QD Picatinny Rail Mount - LS221R-IR