The harmonica pistol was an inventor’s solution to building a multishot gun. The first guns that were capable of firing more than one round without reloading were made in the 1500s and were called pepperbox revolvers. These guns had three or more barrels and this caused the gun to be very front heavy and difficult to aim. The harmonica gun was lighter because it had one barrel and the shot was loaded into a steel slide. The slide could be loaded with 9 or 10 shots, which was three or four more than a traditional revolver. Problem was, it took more time to load than a revolver. But the reason most soldiers probably disliked the harmonica pistol was that the metal slide made it impossible to store in a holster. A revolver may have only had six shots, but the soldier could pull it out and be ready at a moment’s notice.