Meprolight M21T M-21 Reflex Sight 1x30mm, Unlimited Eye Relief, 12 MOA Triangle Reticle, Black

The Meprolight M21T reflex sight is a 1x30mm red dot designed for shooters who need a reliable, always-on optic that works without batteries or external power. Built to military-grade standards and trusted by armed forces and law enforcement worldwide, the M21T uses a hybrid illumination system: fiber optic collection gathers ambient light during the day, while a tritium capsule takes over at night. The result is a sight that's combat-ready in any lighting condition—dawn, dusk, daylight, or total darkness—without a single switch or battery to manage.

The 30mm lens delivers an unlimited field of view and allows both eyes to stay open, maintaining situational awareness whether you're on a precision rifle, patrol carbine, or home-defense setup. The 12 MOA triangle reticle is intuitive for rapid target acquisition and quick follow-up shots. With no moving parts, no electronics, and no maintenance burden, the M21T is built to work reliably for years in hard use—desert, rain, snow, or mud.

If you're running a duty rifle, a precision hunting gun, or a defensive carbine and you want to eliminate the uncertainty of battery life and electronic failure, the Meprolight M21T delivers the simplicity and toughness that make it a favorite among professionals and serious shooters who can't afford downtime.

Key Features

• Hybrid illumination: fiber optic by day, tritium at night—no batteries or external power required
• 30mm objective lens for wide field of view and both-eyes-open shooting
• 12 MOA triangle reticle for quick target pickup and follow-up shots
• Unlimited eye relief: shoot comfortably at any distance from the optic
• Military-grade construction designed for extreme field conditions
• No switches, no electronics to fail, no maintenance

Specifications

Frequently Asked Questions

Does the M21T work without batteries?

Yes. The M21T uses a fiber optic collector during daylight hours and a self-powered tritium capsule at night. There are no batteries, switches, or external power sources—it is always on and ready.

What is unlimited eye relief?

Unlimited eye relief means you can position the sight at any distance from your eye and still see the full reticle and field of view. This gives you freedom in how you mount and shoot the optic, whether you're using it on a rifle, carbine, or pistol.

What reticle options are available on the M21T?

The M21T ships with the 12 MOA triangle reticle as specified in the model name. Other reticle options (4.3 MOA dot, 5.5 MOA dot, bullseye, and open X) are available on other M21 variants.

Is this sight suitable for hunting and tactical use?

Yes. The M21T is built to military standards and used by armed forces and law enforcement worldwide. Its durability, reliable illumination, and wide field of view make it suitable for hunting, tactical carbines, home defense, and professional duty use.