Morty: You sell weapons to killers for money?!
Rick: You’ve got what the intergalactic call a very planetary mindset, Morty. It’s more complicated out here.
~ Conversation between Rick Sanchez and Morty Smith regarding Rick selling guns to assassin Krombopulos Michael.

A Weapons Dealer (sometimes known as an Arms Dealer or a Gun Runner) is someone who gains profit from selling weaponry to others. They are similar to warmongers in the idea that they rely on conflict to survive; in fact, without war, such individuals would have no source of income.

Many weapons dealers are infamous for working for almost anyone if paid enough, even villains that others genuinely hate or fear (such as Terrorists or Tyrants).

In some cases, weapons dealers may not be in it for profit, but rather to spark action, an event, or simply to arm those that they deem useful to their cause.