Developed by Colt Technik (a subsidiary of Colt) in Jericho, New York at the request of John Edward Shields (manager of operational security with Eastern Airlines) as a way to arm pilots aboard airliners to prevent hijacking. Hijackings were much more common in the late 60s and early 70s and in response the FAA started the Air Marshal program that would put armed officers on board commercial flights. Shield's specifications for the revolver were: the ammunition should not be able to penetrate the fuselage, over penetrate the target, or ricochet. It would also be stored and carried by the pilot and copilot in two pieces, to be assembled and then placed in a safe in the cockpit. This two-piece design renders the gun useless, as the frame will not accept a standard revolver cylinder, and the cylinder cannot be placed into a standard frame. Built on a modified Lawman Mk. V frame with blade and frame notch sights, standard barrel markings, left side of the frame marked with a "RAMPANT COLT/V" roll stamp, serrated casehardened trigger, and checkered hammer. The cylinder is a black plastic called Zytel and has six steel sleeves that would have been individually loaded with a primer, low power propellant charge, plastic sabot, and plaster of Paris projectile, the cylinder is not reloadable, and the revolver is reloaded by discarding the fired cylinder and inserting a whole new one. The revolver correctly does not have an ejector rod, as there are no shells to eject. The cylinder is numbered "64" but is otherwise unmarked. Fitted with factory checkered walnut grips with gold medallions.

Excellent with 99% original blue finish, sharp markings, light handling marks, and some pressure marks on the Zytel cylinder. The grips are also excellent with some small dings. Mechanically excellent. A very rare and unusual Colt prototype revolver!