This might be an age-old debate put to rest many times, but I'd like all of your humble opinions. I'm looking for a civvie rendition of an M4 carbine that is solid, shoots well, and has decent prices on ammo. I know that RRA, Colt, and Bushmaster all make their own M4's. I've researched a bit and it seems to me that people go more with the RRA LAR-15 and the Bushmaster M4A3 over the Colt (which is odd since doesn't the military use Colt?). I'd like the weapon to be in .223 Rem/5.56 NATO (strangely enough I've seen them in 7.62, or maybe my eyes were playing tricks on me) and not to cost too much more than $1000. Or... is building one from scratch less expensive? So everyone, what is your pick?