9 News: Playboy Playmate jailed after trying to board plane with loaded .45 Colt revolver L.A. Late: Shanna Marie McLaughlin Carried Loaded Colt 45 Through TSA UK Mail: Playboy Playmate jailed after trying to board plane with loaded .45 Colt revolver Is intelligence inversely related to bust size? Besides trying to take the gun through an airport security check, you also have to wonder about someone who apparently would carry a Colt Single-Action Army (must be manually cocked for each shot) for self defense. The big .45s are great for hunting & melon mashing. Also, is the SAA protected by a transfer bar mechanism? Carrying a loaded round under the hammer in that type of gun generally is considered unwise (safer in some single-actions than others).