Hey everyone, I just have a few questions I was hoping I could get some help with. I got a ton of great advice the first time I asked about getting a starter AR, and just have a few general questions. 1, if a rifle is listed as 5.56cal, as opposed to .223/5.56, is it only good for 5.56 ammo? I feel stupid asking because it seems obvious, but I always thought they were pretty much the same. And as far as the 2 types of ammo go, is one better than the other? This will pretty much just be a range and potentially home defense gun, unless someone I know starts hunting or something. And lastly, I was looking at a Troy Industries CQB-SPC A3 for $699. Anyone have any opinions on Troy as a whole or that gun specifically, and at that price? I recall hearing some stuff about Troy before, but whether good or bad I don't know. Any advice would be much appreciated.