The Holosun LS221G is a 7075 Aluminum bodied multi- laser aiming device. Zeroing is easy with the coaxially mounted class IIIA visible green 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. Features of the Holosun LS221GCoaxial Green and IR Laser PointerHigh/Low Brightness SettingRemote Cable SwitchQuick Release MountIP67 WaterproofIn the Box: QD Release MountRemote Cable SwitchT10 L KeyCR123A BatteryUser ManualHolosun 221 SeriesMPNLaser PointerDescriptionHolosun LE221-GR-IRGreen & IR221 Green & IR LE221-GR-IRHolosun LE221-RD-IRRed & IR221 Red & IR LE221-RD-IRHolosun LS221G-IRGreen & IR221 Green & IR LS221G-IRHolosun LS221R-IRRed & IR221 Red & IR LS221R-IR Holosun LS221G& IR Coaxial Green and IR Laser Sight w/ QD Picatinny Rail Mount - LS221G-IR