Colt King Cobra 357 Magnum 3in Brushed Stainless Revolver - 6 Rounds - Colts King Cobra is reincarnated for 2019 as the 6-Shot .357 Magnum big brother of the Colt Cobra Double Action revolver. Sporting a heavy-duty frame, 3-inch barrel, and brushed stainless steel construction, the King Cobra secures a place in the legendary heritage that makes Colt double-action revolvers some of the hottest collectible  firearms today.