I would order the complete upper assy, then later when you have more funds, you can order a lower receiver and have two complete weapons. The AWB MIGHT just sunset in two weeks, and pre/post won't matter. Also, Military and Law Enforcement are exempt, but your's is a grey area. You could order just the barrel, an armorer's wrench, get a punch and a hammer and do-it-yourself. It's not that hard, you would have a better understanding of the weapon, and you could sight it in so it is perfect. You are allowed to buy pre-ban uppers, it is not illegal unless you attach it to a post-ban lower, but I doubt that applies out-of-country. All this should be moot in two weeks (hopefully).