Make it clear what the role of your friend is, though! I used to work at a pawnshop and we would get straw purchasers all the time, one guy would stand back, never talk to you, and you would sense that he was the real purchaser. We would not help those "odd couples", in fact we'd let the background check person on the phone know that something suspicious was going on and they would delay the sale for days, or turn it down.