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Meprolight M21 1x30mm Reflex Red Dot Sight and Fubs Self-Illuminated Flip Backup Sight has been discontinued by Meprolight and is no longer available. Our product experts have helped us select these available replacements below.You can also explore other items in the Red Dot Sights & Accessories, Red Dot Sights yourself to try and find the perfect replacement for you!
M21 1x30mm Rifle Sight![]()
Originally developed for the Israel Defense Force, the Mepro M21 Red Dot Day/Night Self- Illuminated Reflex Sight represents the best of Meprolight tritium technology and remains in active duty for the IDF, militaries and law enforcement agencies worldwide.
A red dot sight with fiber-optic illumination by day, Meprolight tritium by night, it provides the advantage on any battlefield with no need for batteries, ever. Its rugged, battle-proven construction meets or exceeds rigorous MILSTD- 810 standards to thrive in the harshest conditions.
With a large field of view through a 30mm diameter lens and 4 amber color reticles options available (4.3 MOA dot,Triangle, 4.3 Bullseye, and Open X) the Mepro M21 sets the standard of the terms of Always on, Always ready.
Fubs Self-Illuminated Flip Backup Sight
The Mepro FUBS is a tritium-enhanced set of sights two tritium vials are firmly inserted in the rear sight, and one tritium vial is inserted in the front sight. In addition, the self-illuminated backup sights are designed to provide the shooter with secondary sights if the primary optics go down.
The advanced Mepro FUBS sights are low-profile, made of strong composite material, and are highly durable. Quickly and easily flip them into position when needed. Sight pin elevation is easily adjusted without tools.
Day or night, the tritium makes the Mepro FUBS a viable option.
The MEPRO FUBS flip-ups are advanced, low-profile self-illuminated front and 2-Dot rear backup tritium sights -designed to provide a secondary sighting solution in case the primary optics go down. You can also use it as primary sight. The Mepro FUBS sights are mounted to any Picatinny rail using a 2.5mm Hex key (provided).