Viridian 9810051 RFX45 Green Dot Reflex Sight Black | 24 x 15.5mm 5 MOA Green Dot Reticle

The Viridian RFX45 green dot reflex sight brings the proven visibility advantage of Viridian's green LED technology to a compact, closed-emitter design built for shooters who demand speed and clarity. Whether you're running a pistol, AR, or shotgun setup, this 5 MOA green dot sight delivers a bright aiming point in bright sunlight and low light alike — a real edge over standard red dots. The closed-emitter tunnel design tightens your field of view and gets your sight picture locked faster, cutting the learning curve on target acquisition.

Built from precision-machined 6061 aircraft-grade aluminum with hard coat anodization, the RFX45 is durable enough for serious use without excess weight (just 1.73 ounces). The fully multi-coated optical window keeps the glass clean and distortion-free, so your reticle stays crisp from close range to distance. The ACRO footprint makes mounting straightforward on popular slide-mounted and rail-mounted interfaces, and the sight ships with the adapters and mounts you need to get running quickly.

Viridian engineered the RFX45 for real-world operation: INSTANT-ON activation wakes the sight the moment you move it, so there's no fumbling with buttons under stress. Ten brightness settings plus two night-vision modes let you dial in the perfect dot for any light condition. The auto-sleep function drops into power conservation after two minutes of stillness, stretching a single CR2032 battery to 50,000+ hours of runtime. Audible and tactile adjustment clicks make zeroing intuitive, and the unlimited eye relief means you can shoot it however feels natural.

The RFX45 runs in temperatures from -4°F to 130°F and carries an IPX6 environmental rating, so mud, rain, and dust won't slow you down. If you've shot with Viridian's green lasers and appreciated the visibility jump, or if you're chasing a reflex sight that performs in full sun, this is worth a hard look.

Key Features

• 5 MOA green dot reticle — bright and visible in daylight and dim light
• Closed-emitter design for faster target acquisition and reduced parallax confusion
• INSTANT-ON activation with automatic wake-up on movement
• 10 brightness levels plus 2 night-vision modes for any lighting condition
• Precision-machined 6061 aluminum housing with hard coat anodization — lightweight and tough
• Fully multi-coated optics for clear, distortion-free glass
• Auto-sleep power conservation extends battery life to 50,000+ hours on one CR2032
• ACRO footprint compatible with standard reflex sight mounts
• Audible and tactile adjustment clicks for easy zeroing
• IPX6 environmental rating handles mud, rain, and dust
• Includes adapters and mounts for quick installation

Specifications

Frequently Asked Questions

What mounts and adapters come with the RFX45?

The sight ships with adapters and mounts included, though the specific models depend on your application. The RFX45 follows the ACRO footprint, which is the industry standard for reflex sights, so it will work with common slide-mount and rail-mount interfaces. Contact us or check the manual for your specific platform.

How long does the battery last?

A single CR2032 battery powers the RFX45 for up to 50,000+ hours of runtime. The auto-sleep function activates after 2 minutes of inactivity to conserve power when the sight isn't in use.

Is the green dot visible in bright sunlight?

Yes. Viridian's green LED reticles are designed for superior visibility in daylight conditions compared to standard red dots. The RFX45 includes 10 brightness settings to dial in the perfect intensity for your light conditions.

Can I use the RFX45 in cold or wet weather?

Yes. The sight operates reliably in temperatures from -4°F to 130°F and carries an IPX6 environmental rating, meaning it resists dust and water intrusion. It's built to handle mud, rain, and harsh field conditions.