I am going to get my first AK this summer and i decided that a vector will be my best bet. Which one is the best to get? Let me elaborate: 1. I am getting it for fun, plinking, shooting all kinds of stuff, just a fun rifle. Should I fet a folding stock, yes or no? 2. Can i put a sling on a folder? 3. Can I modify a vector quite a bit, or not that many choices? 4. Do any of the vector guns have a threaded barrel?