Grappling gun

A grappling gun is a tool used to fire a grappling hook.

In 2525, Zak Kebron made up a story about his actions during the Dominion War, which included himself and other USS Excalibur (NCC-26517) crewmembers boarding the USS Corinth (Cheyenne class) with grappling guns. (SS NF (Stone Cold Truths))