gunoholic
A person who is addicted to buying guns. Usually owns more than 20 guns and has a list of at least three more guns that he/she intends to purchase as soon as funds come available. Purchases more guns in a panic when Democrats get elected to office, or on rumors of anti-gun legislation. Also known to constantly surf the internet and gun auctions for deals on guns.
That Fred's a real gunoholic - he is constantly asking me to cover for him if his wife calls while he's picking up his latest firearm acquisition from his FFL (licensed firearms dealer).