Korth Ratzeburg Sport 6" Revolver with .357 Magnum & 9mm Exchange Cylinder

Pick up a Ratzeburg-era Korth and the first thing you notice is the bluing. This Sport wears the deep, almost liquid high-polish blue that the Ratzeburg shop became known for, the kind of finish that looks wet under any light. The barrel side carries the full address, MADE IN W. GERMANY, WAFFENFABRIK KORTH, RATZEBURG/LBG, which dates it to the era when each gun left the bench hand-fitted by a small crew rather than built on a line.

The 6-inch barrel runs with a ventilated rib and a full underlug, and the front sight stands on a serrated ramp matched to a fully adjustable target rear. Sight radius like this is exactly what the Sport designation was meant to deliver. The trigger is the wide, grooved target style, and the walnut grips are the anatomical Korth pattern with deep palm swell and finger grooves cut for a settled two-hand hold.

Here is where this one separates itself. It comes with a second cylinder, marked for 9mm, that drops in to convert the gun from .357 Magnum to 9mm Parabellum. Korth machined these cylinders to the same tolerances as the primary unit, so timing and lockup hold across both. The 9mm cylinder uses moon clips, two of which are included. The conversion is a hand operation done in seconds, no tools beyond what ships in the case.

The set is complete. It arrives in the original Korth box with the blue fitted tray, both cylinders, the moon clips, the spare front sight blades, and the adjustment tool. For a collector chasing Ratzeburg Korths, the exchange-cylinder Sport is a narrow target. You get the finish, the fit, and the versatility of two calibers in one frame that was built to outlast its owner.