So my friend who's on my airsoft team, has an m16 and a scorpion looking clear submachine gun. I went over to his house the other day and looked at them in shot them and I told him they sucked. He says the m16 is worth over 2000 dollars and the clear gun is worth over 500 dollars. He said he got them off of ebay but the real company was selling them from eBay. And I keep telling him to sell them or get rid of them and buy a new gun. But he says they're better than any other gun that you can get. I'm still trying to convince him but he won't listen. What do should I do?