I've been considering building/buying an AR for a while now, and I keep getting the offer from Buds guns on these: Doublestar Star 15 CAR 16" HBAR .223 for Sale at Buds Gun Shop $649.00 I've done a lot of looking/research on my own, frequented the AR forums, and have found generally good reviews. My question is, do any of you have these or other Doublestar products, and how happy are you with their products? Is the workmanship/craftsmanship good? Would you buy their product again? My purpose for this gun is general varmint killing/home defense/potential SHTF defense/occasional plinking. If I were a more frequent shooter I'd go after a Colt or S&W. Realistically though, I'd only shoot this a couple times a year though. The model listed here is a .223 cal. Would you guys recommend getting this in the .223, or go for the 5.56? Thanks in advance for your comments.