A gun barrel is a firearm component which guides the projectile during acceleration.
Gun barrel or gunbarrel may also refer to: Gun Barrel (band), a German heavy metal band Gunbarrel Highway, a road in Australia Gun barrel sequence, a sequence featured in most James Bond films Gunbarrel, Colorado, an unincorporated community in Boulder County, Colorado Gun Barrel City, Texas, a town in Henderson County, Texas
See also Barrel of a Gun (disambiguation)