Well I just got an AR 15. I have long range rifles but I bought this AR 15 for more of an "assault" type weapon. It came with a flat top upper so I need to put some sights on it. I want to put on a scope that I can aim quickly with, mainly within 100 yards. Not for exact precision but for hitting a man sized target (torso size). I'm not looking for anything that I really can adjust in a 500 yard pin point shot, but I do want to be able to rapidly engage if the situation ever occured. What do you guys recommend? I'm also considering flip up sights but right now I'd like to get a quick aiming scope. Thanks.