The Steyr (or Steyr-Pieper) 1909 6.35mm Pistol

For more information about the Steyr 1909, see this page: https://unblinkingeye.com/Guns/09SteyrA/09steyra.html
To see other Pieper-designed pistols, follow these links:
Bayard 1908: https://www.youtube.com/watch?v=PBxv5gBmhhQ
Pieper-Delu/Pieper New Model: https://www.youtube.com/watch?v=1bpnQM3vy50&t=9s