That means if dirt, water, ice, or snow covers the emitter, you will not have a red dot to aim with. This is why many who run a reflex sight on their handgun equip it with backup iron sights.

The best pistol red dots are designed to improve your speed and accuracy in self-defense, competition, and training.

This slightly upsized version of the original Canik Mete MC9 micro-compact offers a bit more in capacity and sight radius ...