1. A person who takes a keen interest in
firearms and
ammunition, possibly including the study, peer discussion, ownership, bearing and use thereof - usually used playingly by oneself or by other firearms enthusiasts in this sense. Often associates with people with similar interests.
2. A person who takes seemingly
morbid interest in firearms out of a belief that they provide protection, security and freedom while appearing scary to the uninitiated - usually used derogatively by non-gun people, particularly those who are scared of firearms.