If you think somebody is price gouging on guns or ammo, boycott and shun them. Now and next month and next year and the year after that. Whether it's a local store or an online retailer or your buddy or some guy on ebay. Don't buy from them now. Don't buy from them ever. Well maybe if they have huge discounts at their going out of business sale.
If you have a buddy who is feeding the frenzy and you condone his price gouging because he's a friend then you deserve no sympathy when it happens to you.