Meprolight Mepro 21 Day/Night Tritium Self-Illuminated Reflex Sight

5.00 out of 5
(4 customer reviews)


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About the Meprolight Mepro 21 Day/Night Tritium Self-Illuminated Reflex Sight:

The MEPRO 21 provides instant, all-light aiming capability, without batteries. Designed through close collaboration with Israeli Special Forces, the MEPRO M21 is battle proven, simple to use accurately and totally reliable. The optic of choice by the IDF for Special Forces and Infantry. 
MEPRO 21 offers a large 30mm diameter lens which allows rapid target acquisition with both eyes open. This was the first reflex sight in the world designed for close quarter combat, and it can be ordered with optional reticles – dot, triangle, open-x, and bullseye.
Illumination of the aiming point is achieved by a fiber optic collector system during the day, and by a miniature self-powered tritium light source at night. The transition between the two systems is instantaneous and automatic to assure good contrast between the aiming dot and the target area.
The MEPRO 21 reflex sight offers users the ability to acquire targets accurately at any range, in any situation, with both eyes open. The MEPRO 21  is also designed to work in tandem with a magnifying scope like the MEPRO MX3 - mounted behind it for ultimate accuracy. Make sure to check out our other sights made by Meprolight in Israel such as the Mepro M21, M5, and MOR 
None-Discountable Product 


  • Dust cover case included
  • Objective Lens Diameter: 30 mm
  • Tube Diameter: 1.17 in
  • Length: 114 mm, 4.48 in
  • Height: 2.73 in, 70 mm
  • Width: 55 mm, 2.22 in
  • Weight: 226 Grams/8 ozs



  • Always ready for action – no batteries or switches.
  • Aim & shoot faster than ever - with both eyes open!
  • Self-illumination means always available
  • Operates under all weather and temperature conditions
  • Large 30mm diameter lens assures large FOV
  • Rapid target acquisition means quicker shooting in urban areas
  • Quicker shooting in urban areas and rapid target acquisition
  • Can be ordered with optional reticles – dot, triangle, open-x, and bullseye
  • Effective use of sight under extreme conditions such as bad weather, firing after physical stress and firing under pressure
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About Meprolight:

Meprolight is a leading International Electro-Optics company, developing, manufacturing and marketing systems for infantry, armed forces, law enforcement agencies and civilian markets since 1990. Meprolight provides comprehensive solutions with a wide array of combat-proven products; Electro-optical and optical sights and devices, night vision devices, thermal sights, laser rangefinders, handheld rangefinders and fire Control systems and other tritium illuminated products and accessories for safety and security applications.

All Picatinny Rails
450 g
55 mm
70 mm
114 mm

Additional information

Weight 450 g
Dimensions 114 × 55 × 70 mm

Country of Manufacture




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4 reviews for Meprolight Mepro 21 Day/Night Tritium Self-Illuminated Reflex Sight

  1. 5 out of 5

    Steve Magendans

    Great new site . My first time looking

    • Yoav Dotan (store manager)

      Thanks for the kind feedback

  2. 5 out of 5


    Came across you guys today while shopping for some ar stuff on line. You guys have stuff that I hadn’t seen before, and I thought that I had just about seen it all, NOT! I’ve been here several hours and still have a ways to go. Super cool stuff guys. I’ll be getting one of your Meprolite M21’s here in the states from Optics Planet. With much respect, Pat from Texas

  3. 5 out of 5

    Jeff Oakes

    I have 4 of the Mepro 21’s in all sight options… great fast target acquisition and holds zero well under extreme use. I would recommend for personal defense rifle sights on Hk,AR, Galil and FN platforms, as well as law enforcement applications.

  4. 5 out of 5


    Happy to Have the M21 on my IDF Clone 🙂

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    Image #1 from Rafi
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