Meprolight USA M21 1x 30mm 4.3 MOA Red Dot Reflex Sight - Black

The Meprolight M21 is a battle-proven, Israeli-made self-illuminated reflex sight designed for fast, instinctive, both-eyes-open shooting on rifles and carbines. Built around a large 30mm diameter lens, the M21 provides an unlimited field of view and unlimited eye relief so the shooter can quickly acquire the target and stay on it through dynamic transitions. The black housing keeps a low profile on the rail while remaining rugged enough for hard field use.

This dual-illumination sight needs no batteries. Tritium lights the reticle in low and no-light conditions, while a built-in fiber-optic collector automatically adjusts the daytime reticle brightness to match ambient light. The result is a true 24/7 aiming solution that is always on, always ready, and maintenance-free, trusted by military users worldwide.

This specific variant ships with a 4.3 MOA red dot reticle, a clean single aiming point well suited to close- and medium-range engagements. The included quick-release Picatinny mount allows the optic to be removed and reinstalled as needed, and the sight features adjustable windage and elevation for precise zeroing. A weather-resistant sealed housing helps the M21 hold up in harsh conditions, and the optic is also suitable for use behind Night Vision Goggles or scopes.

At just 4.48" long and 13.12 oz, the M21 keeps weight and bulk to a minimum while delivering a clear, uncluttered sight picture. This model M21 reflex sight from Meprolight USA is a proven choice for patrol rifles, defensive carbines, and any platform where a reliable, battery-free red dot is required.