A friend of a friend has an AK he's willing to sell me - but I know nothing about them. I trust my friend, and know he wouldn't have even told me about it if he at all thought that his friend was untrustworthy. I haven't seen the AK-47 yet, and want to be able to decide on the spot if it's something I should buy. All I know about it is that it's Chinese, it's Pre-ban, and it's in excellent condition. Comes with 5 round & 10 round mags, bipod, and a descent scope. The guy is asking $400 for it. My questions: 1) I know there are different Chinese manufacturers. Is this a good deal for any of them, or just one or two? 2) What is meant by Pre-ban? Would it being Pre-ban affect it's value? 3) What should I look for to determine it's value, and are there any problems that are easy to spot?