Originally developed for the Israel Defense Force, the Meprolight M21-B is a day/night self-illuminated reflex sight that leverages Meprolight tritium technology for reliable low-light performance. The M21-B features a large 30 mm diameter lens and a 4.3 MOA red dot for fast, intuitive aiming. Its design supports use with night vision devices and magnifiers without decreasing field of view, and the unit includes a dust cover for transport and storage. Weather-resistant construction and simple adjustment make the M21-B suitable for duty, defensive, and close-quarters applications.
Key Specifications
- The sight weighs 13.12 oz.
- The reticle is a 4.3 MOA red dot.
- The objective lens measures 30 mm.
- Magnification is 1x.
- Overall length is 4.48 inches.
- Windage and elevation are adjustable.
- Eye relief is listed as unlimited.
- Field of view is listed as unlimited.
- Finish is black.
- Construction is weather resistant.
The M21-B blends a proven, self-illuminated aiming system with practical features for real-world use: a large glass aperture for rapid target acquisition, compatibility with NVGs and magnifiers, and weather-resistant durability. It’s a straightforward, dependable reflex sight for users who value clear aiming points and uncomplicated operation in varied lighting conditions.
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