$455.69
Availability: In Stock
The Meprolight M21B is a 1x30mm reflex sight built for shooters who need fast, accurate target acquisition in any light condition—without batteries. Developed through collaboration with Israeli Special Forces and proven in real-world operations, the M21B combines a fiber optic day-light system with self-powered tritium illumination that switches automatically as ambient light changes. The large 30mm lens gives you a wide field of view and lets you keep both eyes open while shooting, a fundamental advantage in defensive, hunting, and tactical scenarios where situational awareness matters as much as precision.
No switches, no batteries, no excuses—the M21B is always ready. The fiber optic collector gathers daylight to illuminate the aiming dot during the day; at night, the tritium element takes over seamlessly. That automatic transition means consistent contrast and visibility whether you're on the range at noon or navigating low-light conditions. The unlimited eye relief design works naturally with rifles, shotguns, and pistols, and pairs effectively behind a magnifier for extended-range work.
This is a sight built for reliability under pressure: extreme temperatures, weather, recoil, and the stress of the moment. It's the kind of tool that works the same way every time, which is exactly what you need when it counts.
| Objective Lens Diameter | 30mm |
| Magnification | 1x |
| Eye Relief | Unlimited |
| Illumination | Fiber optic (day) + tritium (night), automatic |
| Power Source | None—self-illuminating |
| Finish | Black |
Yes. The M21B uses fiber optics to collect available daylight and a self-powered tritium element for low-light aiming. There are no batteries to install, maintain, or replace, and no switches to operate.
Yes. The unlimited eye relief design allows the M21B to function effectively in tandem with a magnifying scope positioned behind the reflex sight for longer-range target engagement.
The 1x30mm reflex sight with unlimited eye relief can be mounted on rifles, shotguns, and pistols. Verify your firearm's mounting interface before purchase.
The tritium illumination element activates automatically as ambient light decreases, providing a self-illuminated aiming point without requiring any user input or power source.
SKU: 114463300 • Width: 5in • Height: 2.9in • Depth: 6.6in • Weight: 1.19oz
Availability: In Stock
The Meprolight M21B is a 1x30mm reflex sight built for shooters who need fast, accurate target acquisition in any light condition—without batteries. Developed through collaboration with Israeli Special Forces and proven in real-world operations, the M21B combines a fiber optic day-light system with self-powered tritium illumination that switches automatically as ambient light changes. The large 30mm lens gives you a wide field of view and lets you keep both eyes open while shooting, a fundamental advantage in defensive, hunting, and tactical scenarios where situational awareness matters as much as precision.
No switches, no batteries, no excuses—the M21B is always ready. The fiber optic collector gathers daylight to illuminate the aiming dot during the day; at night, the tritium element takes over seamlessly. That automatic transition means consistent contrast and visibility whether you're on the range at noon or navigating low-light conditions. The unlimited eye relief design works naturally with rifles, shotguns, and pistols, and pairs effectively behind a magnifier for extended-range work.
This is a sight built for reliability under pressure: extreme temperatures, weather, recoil, and the stress of the moment. It's the kind of tool that works the same way every time, which is exactly what you need when it counts.
| Objective Lens Diameter | 30mm |
| Magnification | 1x |
| Eye Relief | Unlimited |
| Illumination | Fiber optic (day) + tritium (night), automatic |
| Power Source | None—self-illuminating |
| Finish | Black |
Yes. The M21B uses fiber optics to collect available daylight and a self-powered tritium element for low-light aiming. There are no batteries to install, maintain, or replace, and no switches to operate.
Yes. The unlimited eye relief design allows the M21B to function effectively in tandem with a magnifying scope positioned behind the reflex sight for longer-range target engagement.
The 1x30mm reflex sight with unlimited eye relief can be mounted on rifles, shotguns, and pistols. Verify your firearm's mounting interface before purchase.
The tritium illumination element activates automatically as ambient light decreases, providing a self-illuminated aiming point without requiring any user input or power source.
SKU: 114463300 • Width: 5in • Height: 2.9in • Depth: 6.6in • Weight: 1.19oz