The Steyr 1893 Gas-Seal Revolver was an Austrian military prototype tested before the Rast & Gasser 1898, featuring a unique Pieper-style gas-seal mechanism where the cylinder moves forward. Produced in limited numbers, it chambered 8mm and had variations in cylinder design. Despite its aesthetic appeal and complex 'strawed' internal finish, a heavy double-action trigger pull likely prevented its adoption.
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