AR-15 Scopes

A red-dot sight, like this EOTech, can also be teamed up with a magnifying adapter, and thus get you the best of both worlds.

AR-15 Scopes: Magnified Vs. Red Dot

Not taking into account A1 and A2 iron sights, your AR can have one of two types of optics - red-dot sights or magnified scopes. Here's a look at both.