The Holosun IRIS 4 Quad-Function Laser Device delivers a versatile, high-performance solution for tactical firearms, combining Holosuns renowned reliability with a redesigned 7075 aluminum housing that is 43% lighter, 29% lower, and 28% narrower for streamlined handling. This quad-function system encompasses a powerful 45mW infrared illuminator, a 1,000 lumen white light, and both visible and infrared laser pointers, providing optimal visibility across varied lighting conditions and mission requirements. Independent ambidextrous fire buttons enable seamless momentary or constant ON activation for lasers and white light, while the rear-facing power and mode selector switch enhances ergonomics under pressure. The included three-button remote activation switch with a VIS override function adds crucial flexibility in critical situations, ensuring rapid, reliable engagement. Available with either a green or red visible laser pointer, the Holosun IRIS 4 is tailored for law enforcement, military personnel, and civilian enthusiasts who demand precision and resilience from their tactical laser systems. As a premier choice among multi-laser devices for firearms, this infrared illuminator, white light optics, and quad-function design deliver reliable performance, adaptability, and trusted Holosun quality in one compact package.