One of less than 250 produced circa 1955-1958, the Kimball was a failed attempt at producing a blowback pistol in 30 Carbine using a series of cut rings in the chamber. In theory, on ignition the casing would swell to fill these rings, delaying extraction long enough for pressure to drop. Of only about 238 manufactured, many were destroyed during use by the severe recoil, making examples in this kind of condition even rarer. Blade front and adjustable rear sights, with the Detroit address on the left side of the chamber, serial number on the right, and finely checkered plastic grips.

Very good with 90% plus original blue finish, some areas of light edge wear, thinning, some light spotting and mild pitting on the left side of the frame near the trigger, general handling marks and some light freckling on the back strap. The grips are very good with fine checkering, some light dings and general handling marks. Mechanically excellent.