Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Enjoy free shipping during the holidays! Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC and to all U.S. Military APO/FPO/DPO addresses.

Enjoy Our Extended FREE RETURNS

We want to ensure that making a return is as easy as possible! With our Hassle-Free, Extended Holiday Returns, eligible orders placed from November 12, 2025 on will benefit from an extended return deadline (January 13, 2026 or 30 days after receipt of your order - whichever is later). We'll even cover the cost of return shipping. Learn more about our Return Policy.

Shopping Cart

Product Discontinued by Manufacturer

Viridian Reactor 5 Red Laser Sight For Glock 42 featuring ECR Includes Hybrid Belt Holster R5-R-G42 has been discontinued by Viridian Weapon Technologies and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Laser Sights, Red Laser Sights yourself to try and find the perfect replacement for you!

Product Info for Viridian Reactor 5 Red Laser Sight For Glock 42 featuring ECR Includes Hybrid Belt Holster R5-R-G42

The Viridian Reactor 5 Red Laser Sight For Glock 42 featuring ECR Includes Hybrid Belt Holster R5-R-G42 Color: Black, Beam Color: Red, Laser Output: 5 mW, Wavelength: 635 nm, Battery Life: 6 - 12 hours, Gun Make: Glock, Gun Model: Glock 42, Weight: 0.78 oz, Fabric/Material: High strength thermomolded polymer, Additional Features: Power Switch On/Off, Included Accessories: Hybrid Belt Holster, Condition: New. is here at OpticsPlanet with unbelievable prices and discounts ! Please also check out more options for Viridian Reactor5 Red Laser Sight for Glock.

Purchase your new Viridian Reactor 5 Red Laser Sight For Glock 42 featuring ECR Includes Hybrid Belt Holster R5-R-G42 from OpticsPlanet today and you will appreciate the easy checkout process, fantastic customer service, Free Shipping policy and information on easily tracking your order.

The Viridian REACTOR R5-R red laser sighting system includes an ECR Instant-On custom fit holster with automatic laser activation the moment you draw. No buttons, no squeezing, no doubt. When you draw, it's on.Technical specifications:Weight: .78 oz. (including batteries) Virtually weightlessConstruction: High strength thermomolded polymerLaser Intensity: 5mW peak, 635nm, Maximum legal powerLaser Range: Effective targeting up to 25 yards in daylight Up to 1 mile at nightBattery Life: 6+ hours constant laser 12+ hours pulsing laser (depending on use)Charge Display: 2-color battery level indicator ready / replaceUser Adjustable: Easy windage / elevation adjustments on laserActivation / Modes: Automatic activation with ECR Instant-On/ User-defined operating modes

Features of Viridian Reactor 5 Instant-On Red Laser Sight for Glock:

  • Extremely lightweight
  • Instant-On when drawn from included ECR pocket holster
  • Constant or pulse modes
  • Laser is powered with maximum legal strength
  • Battery life is 12+ hours when set to efficient pulsing mode
  • 2-stage low battery indicator - ready or replace
  • Easy to sight in
  • Easy windage/elevation adjustments
  • Automatic activation with ECR (Enhanced Combat Readiness) Instant-On
  • User defined operating modes

Package Contents:

  • Viridian Reactor 5 Durable Red Laser Sight for Glock
  • Leather hybrid belt holster
Compare (0)