So I purchased an Armalite AR-10 7.62 carbine last year but it didn't come with any sights. It has a dovetail rail of sorts on the reciever and a small one up front. I understand it's a standard rail that most sights are designed to clamp onto. So the question is where do I begin? I started asking at gunshops and they tell me there are a thousand different options and I need to figure out "whats best" for myself. I am totally new to this category of firearms so how the heck would I know! Incidentaly, I fired it for the first time today (used my forehand thumb sticking up as a crude sight ) and was able to pop detergent bottles at 200 yards after a few homing shots. I like the thought of one of those Eotech holographic sights but they are pricey. Fixed sights?