Iron sights might be a more simple technology ... This is when you fine-tune your aim and begin squeezing the trigger. The shot should break within three or four seconds of when you cut that breath ...

Upgraded Feyachi Front Sight: Built-in turnscrew for easy A2 post elevation adjustment， simply push the spring loaded button and folded down, quick and easy to deploy. Front And Rear Iron Sights ...

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.