The Holosun IRIS 4 Green VCSEL Laser Infrared Illuminator White Light Quad-Function System delivers a versatile, high-performance solution for tactical tasks, combining a redesigned 7075 aluminum housing that is 43% lighter, 29% lower, and 28% narrower than its predecessor to create a streamlined weapon accessory without compromising durability. This quad-function device integrates a powerful 45mW infrared illuminator with a 1,000 lumen white light capable of delivering 25,000 candela, along with both visible and infrared laser pointers to ensure optimal targeting and identification across varying lighting conditions. Independent ambidextrous fire buttons provide seamless momentary or constant ON activation for the lasers and white light, while the updated rear-facing power and mode selector switch enhances ergonomics and quick access in the field. The included three-button remote activation switch adds additional operational flexibility with a VIS override function, enabling rapid control from a distance or under demanding circumstances. Available with either a green or red visible laser pointer, the Holosun IRIS 4 is suitable for law enforcement, military, or civilian use, offering reliable performance and clear visibility in low-light environments and on quick-target engagements. This quad-function laser system stands out for its combination of light output, infrared capability, and ergonomic controls, ensuring readiness for any situation.