Punch Gun
A punch gun weapon is a small ranged weapon outfitted with a pressure-sensitive firing mechanism that is affixed to a glove or a similar item. Unlike most ranged weapons, which discharge when a trigger is pulled, a punch gun fires when sufficient pressure is placed upon its barrel. All punch gun projectile weapons have a range equal to their wielder’s natural reach. Although these are ranged attacks, they do not provoke attacks of opportunity.
Source
Character Operations Manual pg. 123
