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Viridian RFX44 – Green Dot Reflex Sight for RMSc & RMR Mounts | MSP

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The Viridian RFX44 is a high-performance green dot reflex sight designed for shooters who demand speed, precision, and reliability. Engineered for both RMSc and RMR footprint platforms, it offers unmatched versatility, whether you’re running a compact carry pistol, a full-size handgun, or an optics-ready rifle.

Featuring Viridian’s Instant-On® motion activation, the RFX44 powers on the moment you draw and powers down when idle, saving battery life while keeping you ready at all times. Built from 6061 aluminum and rated IPX6 waterproof, this optic is rugged enough for duty use yet light enough for everyday carry.


Why Shooters Choose the Viridian RFX44

When every millisecond matters, visibility and response time are everything. The RFX44’s 3 MOA green dot is up to five times more visible to the human eye than a red dot, offering faster sight acquisition in bright or low-light environments.

Top Features:

  • 3 MOA bright green dot – crisp, daylight-visible, and fast to acquire

  • Dual footprint compatibility – fits RMSc and RMR mounts out of the box

  • Motion-activated Instant-On® technology – automatic on/off to preserve power

  • 30,000-hour battery life – long-lasting CR2032 cell with power-saving auto shutoff

  • 10 brightness settings – manual controls for any environment

  • IPX6 waterproof rating – ready for all-weather conditions

  • Ultra-lightweight – just 0.6 oz (without battery)

The RFX44 delivers Viridian’s trusted green-dot clarity in a compact, durable package optimized for handguns, rifles, and shotguns alike.


🔧 Technical Specifications

Feature Detail
Dot Size 3 MOA Green
Activation Motion-activated Instant-On®
Footprint RMSc or RMR
Battery CR2032
Battery Life Up to 30,000 hours
Brightness 10 manual levels
Construction 6061 Aluminum
Water Resistance IPX6
Weight 0.6 oz (without battery)

🔫 Compatible Firearms

The Viridian RFX44 is engineered for broad compatibility across optics-ready handguns and rifles.

RMSc Models:

  • Springfield Hellcat OSP / Hellcat Pro

  • SIG Sauer P365XL / P365 XMacro

  • Glock 43X MOS / 48 MOS

RMR Models:

  • Glock MOS series (17, 19, 34, etc.)

  • FN 509 Tactical

  • Smith & Wesson M&P 2.0 CORE

  • Various pistol mounts and rifle adapters


🧠 RFX44 vs RFX35: What’s the Difference?

The Viridian RFX35 offers a wider lens ideal for rifles and full-size pistols, while the RFX44 is optimized for compact setups with improved fitment and reduced bulk. Both use the same green-dot illumination system, but the RFX44 adds dual footprint versatility, making it more flexible across firearm platforms.


🟩 Built for Speed, Visibility, and Durability

From its daylight-bright green dot to its Instant-On® activation, the RFX44 was made for shooters who refuse compromise. It’s the sight you can trust in competition, defense, or duty scenarios — every time you draw, your optic is awake and ready.


💡 Buy with Confidence from Mounts Plus

Mounts Plus is an authorized Viridian dealer and a trusted source for professional-grade optics and firearm accessories. Every Viridian RFX44 ships fast from the U.S. and is backed by our satisfaction guarantee.

Upgrade your pistol with the Viridian RFX44 and experience faster, brighter, more reliable shooting with the power of green.


Frequently Asked Questions

Q: What mounts are compatible with the Viridian RFX44?
A: The RFX44 fits both RMSc and RMR footprints, making it compatible with popular pistols like the Glock MOS, SIG P365XL, and Springfield Hellcat Pro.

Q: How long does the RFX44 battery last?
A: With motion activation and auto shutoff, the CR2032 battery provides up to 30,000 hours of runtime.

Q: Can the RFX44 handle rifle recoil?
A: Yes, the RFX44 is fully recoil-rated for pistols, rifles, and shotguns, maintaining zero through thousands of rounds.

Q: What’s the difference between the RFX44 and RFX35?
A: The RFX44 is a more compact optic with RMSc and RMR compatibility, while the RFX35 offers a larger window and is geared toward rifle use.

Q: Why a green dot instead of a red dot?
A: Green dots are easier for the human eye to detect in daylight and reduce visual fatigue, resulting in faster and more natural target acquisition.


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