Dont you hate it when your friend gets an amazing gun that you would use but he/she doesn't like it that much. but there isnt much you can do about it. If there was trading you would be able to buy that gun with glimmer or switch something for it instead weapon. Since we are on the subject I also recommend that there should be a bidding as well because there are a lot of items other people may want and are willing to pay whatever is asked for it.