GUN OF THE DAY - Iver Johnson "Hammer the Hammer" Revolver. A good slogan can make or break a firearms's popularity and with our GOTD, having a reliable safety system was foremost. Many of the early revolvers that had their firing pins mounted in their hammers were subject to accidental discharges if they were dropped. Iver Johnson's transfer bar safety design prevented the firing pin from contacting a cartridge until required. For those that wanted a safer .32 or .38, this was a powerful marketing feature. Just how powerful? Consider that most modern Colt, Ruger, and Smith & Wesson revolvers have similar transfer bar or hammer block safety features currently incorporated in their mechanisms.