Have an old gun working or non-working you feel would be worth ~$100? Turn it in to PGPD and receive a $100 Gift Card. No transfer fees. No questions.
http://www.wjla.com/articles/2012/06/prince-george-s-county-police-to-hold-gun-buy-back-76568.html
http://www.wjla.com/articles/2012/06/prince-george-s-county-police-to-hold-gun-buy-back-76568.html