The Holosun HS403C Micro Red Dot Sight and HM3X Magnifier Combo provides operators with a versatile optical solution for carbine and rifle platforms, offering both rapid close-quarters acquisition and precision engagement capability at extended ranges. This integrated system combines Holosun’s robust micro red dot technology with a durable 3X magnification optic, engineered for consistent performance.
Key Features
Holosun HS403C Micro Red Dot
The HS403C is a compact 20mm optical sight designed for direct integration onto rifle and carbine systems. It features Holosun’s proprietary Solar Failsafe™ technology, ensuring illumination even in battery failure scenarios. The unit offers 12 user-selectable brightness settings, accommodating diverse ambient light conditions. Utilizing a Green Super LED emitter, the 2 MOA dot reticle delivers crisp target resolution, optimized for quick acquisition. This advanced LED technology provides an extended battery life of up to 50,000 hours, ensuring sustained operational readiness.
Holosun HM3X Magnifier
The HM3X is a purpose-built 3X magnifier, constructed from durable aluminum for structural integrity under demanding field conditions. It integrates seamlessly into an existing optical setup via a quick-release, ambidextrous, flip-to-side mount. This mounting solution offers both Absolute and Lower 1/3 Co-witness heights, providing adaptability to various iron sight configurations. The HM3X features a 2.75-inch eye relief, mitigating head position sensitivity for rapid sight picture acquisition. Precision windage and elevation adjustments allow for optical alignment with the primary optic, ensuring zero retention. With an IP67 certification, the HM3X is ingress protected against dust and temporary immersion in water, affirming its reliability in adverse environments.
Technical Specifications
Holosun HS403C Micro Red Dot
- Reticle: 2 MOA Dot
- LED Emitter: Green Super LED
- Brightness Settings: 12
- Battery Life: Up to 50,000 hours
- Objective Lens Diameter: 20mm
- Key Feature: Solar Failsafe™
- Application: Rifle, Carbine
Holosun HM3X Magnifier
- Magnification: 3X
- Housing Material: Aluminum
- Mount Type: Quick Release, Ambidextrous, Flip-to-Side
- Co-Witness: Absolute, Lower 1/3
- Eye Relief: 2.75 inches
- Water Resistance: IP67 Certified
- Optical Adjustments: Windage, Elevation









