brown-barrelled

A switch-target clanked as they tore over the points; a vagrant dog scurried away toward the once thriving saloon, and not until they drove in, hissing, grinding, and bumping, to the side of the dusty platform, did Ben's keen eyes catch sight of two herdsmen's horses -- cow ponies -- tethered back of the shanty beside the saloon, and up went the lid of his box at the instant, in went his right hand, and then out it came full grasp on a brown-barrelled six-shooter.

To The Front A Sequel to Cadet Days Charles King 1888