I was talking to a friend of mine the other day and in the course of discussion the topic of firearms and money came up. He mentioned that his wife wanted him to clear out some of his less used pieces to free up some cash. He thought I might be intrested in a Sig 556 that he has. I know little about rifles and absolutely nothing about this particular one. The picture he showed me was reminiscent of an AR-15, but with a shorter barrel and no stock (though he has one, in the picture it was removed) Chambered in .223 He has ran only one magazine through it. He's asking $1200 for it with 2 magazines. Is it a good rifle to buy? Is the price right? He claims they're slightly uncommon and that it could possibly be worth more in the future. I trust this guy pretty completely, but he is a businessman so he has been known to varnish the truth for his own benefit. It's just quite a bit of cash for a firearm that would likely not see much use, but If it's a good buy and a chance to help out a buddy, I will. Advice please.