Viridian 4LUX 2K DUO Foregrip Review & Shoot

Published on March 10, 2026
Duration: 8:51

This review and testing guide covers the Viridian 4LUX 2K DUO, an M-LOK compatible angled foregrip featuring a bright green laser and powerful LED light. The expert instructor demonstrates mounting, operating various modes (laser only, bright/dim light, strobe with laser), and conducts both daylight and night-time live-fire tests. The review highlights the device's robust performance under recoil and its exceptional brightness, making it suitable for extended range use in low-light conditions.

Quick Summary

The Viridian 4LUX 2K DUO is an M-LOK compatible angled foregrip featuring a tactical flashlight (up to 1850 lumens) and a bright green laser. It's USB-C rechargeable, offers multiple modes including strobe, and has a momentary activation button. The device performs reliably under recoil and its laser is visible in daylight, with effective illumination up to 50 yards at night.

Chapters

  1. 00:00Product Introduction: Viridian 4LUX 2K DUO
  2. 00:14Unboxing & Specs Overview
  3. 01:13Initial Product Impressions & Features
  4. 02:00Operating Modes & Functions
  5. 02:57Mounting on AR-15 Rifle
  6. 03:15Shooting Test Plan
  7. 03:34Live Fire Testing & Recoil Performance
  8. 05:43Night Performance Test: Laser & Light
  9. 07:27Ergonomics and Final Thoughts

Frequently Asked Questions

What are the key features of the Viridian 4LUX 2K DUO foregrip?

The Viridian 4LUX 2K DUO is an M-LOK compatible angled foregrip that integrates a powerful tactical flashlight (up to 1850 lumens) and a bright green laser. It features USB-C charging, multiple operating modes (laser only, bright/dim light, strobe with laser), and momentary activation.

How is the Viridian 4LUX 2K DUO powered and charged?

The device is powered by a rechargeable internal battery and can also utilize an included external battery pack (4i SAFE CHARGE). It is recharged via a convenient USB-C port.

What are the light output specifications for the Viridian 4LUX 2K DUO?

The 4LUX 2K DUO offers a high light output of 1,850 lumens with a candela rating of 1,950 cd, and a low setting of 685 lumens with 370 cd. Run times are approximately 78 minutes on high and 90 minutes on low.

Is the green laser on the Viridian 4LUX 2K DUO visible in daylight?

Yes, the green laser on the Viridian 4LUX 2K DUO is noted to be very bright and visible even in full daylight conditions, making it a practical aiming aid.

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