Manufactured by an unknown party at an undetermined date, the Sure Defender shows a number of design similarities to the Dolne "Apache Pistol" with a hinged grip arrangement with a set of finger holes; when opened, it is a single shot percussion pistol, and when folded, it becomes a set of brass knuckles with a swing-out dagger blade which, depending on configuration, serves as either a pistol bayonet or a trench-style knife. The only markings on the pistol are "THE SURE/DEFENDER" on top of the cast brass frame and "241" on the grip, hinge, and knife blade. It has a blue finished barrel, knife blade, trigger, and "hammer", while the grip and rear of the frame are silver plated brass. The dagger measures 2 5/8 inches long with a triangular cross section and a flamberge-style waved edge profile. The overall length is 6 1/2 inches when in "knife" configuration. The underhammer action operates with a steel spring mounted to the underside of the muzzle, a knurled striker and a spring loaded folding trigger. It is unknown which (and when) specific firm produced these unique weapons; however, similarities with other similar pieces from the time suggest they may have all been manufactured by the same firm.