A red dot sight is pretty cool – it projects a bright dot that seems to float right on your target. The beauty of it? You don't need to line up the back and front sights. Just put the dot where you want your bullet to hit. It's easy and smart.

Wondering how it works? Inside, there's a mix of special lenses and reflective stuff that makes the red dot appear. If you're into the techy side and want to up your shooting game, understanding this can be a game-changer.