An electrically or pneumatically powered gun used to drive nails into a surface.

plural of gun club

A club for firearms enthusiasts.

plural of gun dog

A large-bore pistol-like firearm used to fire signal flares.

Alternative spelling of outgun

An expert gunner or gunman. / (by extension) Someone most highly rated.

(chiefly US, politics) An organized group which attempts to influence public policy and law with respect to firearms, especially as an advocate of ownership of and access to firearms by individual citizens.

Alternative spelling of snowgun

A double-barrelled shotgun with very short barrels.