The Holosun® LS221 Red and Infrared Laser is an ultrareliable aiming device, designed to deliver intuitive target acquisition and accurate shot placement in fast-action tactical environments. Built around a durable 7075 aluminum body with a corrosion-resistant anodized finish for lasting service in virtually any tactical environment, this dual tactical laser features a class IIIA visible red laser, class 2M IR laser, and an adjustable IR Illuminator, coaxially mounted for easy zeroing and superior zero retention, while the remote cable switch offers intuitive control under stress. The integrated QD mount allows for quick installation on MIL-STD 1913 Picatinny rails, and delivers a tight lockup and wobble-free fit for lasting field service, while multiple user-selectable brightness settings offer lightning-fast target acquisition in virtually any lighting condition. Better yet, this laser sight offers an impressive battery life of up to 50,000 hours on a single AA battery (included). IP67 waterproof.