Holosun IRIS 4 Quad Function Illuminator & Red Laser/Infrared System IRIS-RD4

Holosun IRIS 4 IRIS-RD4 – Overview –

The Holosun IRIS-RD4 is a compact, advanced quad-function aiming and illumination system engineered to meet the demands of modern professionals and enthusiasts alike. Precision-machined from 7075-T6 aluminum, the redesigned housing is 43% lighter, 29% lower, and 28% narrower than the legacy LS420, offering superior ergonomics without compromising structural integrity—ideal for integration on PDWs, SBRs, and standard rifle platforms.

 

At its core, the IRIS-RD4 combines a co-aligned visible red laser, infrared (IR) aiming laser, 60mW VCSEL-based IR illuminator, and a high-output white light delivering 1,000 lumens and 25,000 candela. This integration allows operators to transition seamlessly between daylight aiming, night vision engagements, and high-intensity white light use. The co-alignment of the lasers simplifies zeroing—users can calibrate both IR and VIS lasers simultaneously using the visible laser in daylight conditions, ensuring consistent point-of-aim across environments.

 

A key feature of the IRIS-RD4 is its top-mounted IR beam divergence slider, which enables on-the-fly adjustment of the IR illuminator’s beam pattern from wide flood to tight spot—optimized for performance across a range of shooting needs. Dual independent fire buttons offer tactile, ambidextrous control of laser and light functions, while the updated rear-positioned power and mode selector provides streamlined controls.

 

The included three-button remote connects via a Crane plug and features a visible laser override for instant activation. For power flexibility, the IRIS-RD4 can be powered by two CR123A batteries (included), or one rechargeable 18650 battery (not included) —delivering reliable performance in any environment.

 

Items Dimensions (in inches)

In the Box

• 1x IRIS-RD4
• 1x Triple Button Pressure Pad

– Specification –

• IR Illuminator: 60mW VCSEL
• • IR Laser: 0.7mW VCSEL
• • Green / Red Laser: 5mW
• • LED Light: 1,000 Lumens / 25,000 Candela
• • Battery Type: 2x CR123A (included) / 18650 (not included)
• • Weight: 8.5oz

ELECTRONIC SPECS

Power Source	Battery
Battery Type	CR123A
Battery Life (Hours)	Up to modes
Thermal Modes	N/A
Digital Modes	N/A
Video Recording	N/A
Screen Refresh Rate	N/A
Digital Screen	N/A
Brightness Setting	Up to modes

PHYSICAL SPECS

Window Size	N/A
Dimension (in)	4.2×2.3×1.4
Weight (oz)	8.5

MECHANICAL SPECS

Housing Material	7075 T6 Aluminum
Surface Finish	Hard Anodize
Adjustment per Click	0.5 MOA
W&E Travel Range	±50 MOA

ENVIRONMENT SPECS

Storage Temperature	-40℃~70℃
Working Temperature	-30℃~60℃
Submersion	IPX8
Vibration	1000G

ILLUMINATOR SPECS

White LED Candela	25000
Laser & Illuminator Type	Dual Laser & Dual Illuminator
White LED Output	1000 Lumens
IR Illuminator Class	Class 1
IR Illuminator Output	VCSEL 60mW
IR Pointer Class	Class 1
IR Pointer Output	<0.7mw
Visible Laser Class	3R
Visible Laser Output	<5mW

The Holosun IRIS 4 IRIS-RD4 is a rugged, dual-laser aiming system engineered for professional, tactical, and night-vision-capable shooters who demand precision, reliability, and adaptability in challenging environments. Built with Holosun’s proven durability and advanced electronics, the IRIS 4 delivers dependable visible and infrared aiming performance for both daytime and low-light operations.

This model features a high-output red visible laser paired with an infrared (IR) laser, providing versatile aiming solutions across a wide range of shooting conditions. The red visible laser offers crisp clarity for daytime use and training, while the IR laser is optimized for use with night vision devices, enabling accurate, discreet aiming without revealing the shooter’s position.

Constructed with a compact, low-profile aluminum housing, the Holosun IRIS 4 IRIS-RD4 is designed to withstand recoil, impact, and harsh environmental conditions. Its streamlined form integrates easily with modern rifles and carbines, preserving weapon balance and allowing compatibility with additional accessories. Precision windage and elevation adjustments ensure accurate zeroing and consistent performance.

Intuitive, ambidextrous controls allow quick switching between laser modes, supporting rapid transitions during dynamic scenarios or training sessions. Whether deployed for duty use, tactical training, or advanced civilian applications, the Holosun IRIS 4 IRIS-RD4 delivers reliable performance where it matters most.

For shooters seeking a durable, dual-laser aiming solution that excels in both visible and night-vision environments, the Holosun IRIS 4 IRIS-RD4 stands out as a mission-ready optic built for real-world use.