I have been thinking and I suppose I had better build an AR while they are still legal. I am thinking along the lines of the radicals and want one with some fire power. so I am thinking 308 for several reasons. cheap to reload for lots of them around and can do some damage if need be. I hope to never need it for the purpose I am building it for but I think I should have one just the same. Here is that I am thinking. I want a highly accurate and dependable compact set up. something that can e packed around or thrown in a pack of some sort. Dependability is key. I am thinking a flat top reciever but not set on it. I would like to put a scope on it but also have the ability to fall back on a secondary type of sights. I know very little about ar's so someone give me an idea of where to start. I would like to do a custom barrel unless there is someone out there that sells an accurate pre barreled upper. I am all ears!I will be slowly buying this in parts and do not want to skimp on anything.