"Browning Hi-Power pistols were used during World War II by both Allied and Axis forces. After occupying Belgium in 1940, German forces took over the FN plant. German troops subsequently used the Hi-Power, having assigned it the designation Pistole 640(b) ("b" for belgisch, "Belgian").[3] Examples produced by FN in Belgium under German occupation bear German inspection and acceptance marks, or Waffenamts, such as WaA613. The artillery version with its adjustable tangent rear-sight, shoulder-stock, 13 round magazine and later 20 round magazine was routinely converted to full-auto-only. In German service, it was used mainly by Waffen-SS and Fallschirmjäger personnel."

Yes, the OP's HP is a modern version. However, pistols in this configuration are "commonly" referred to as "artillery models", though not always technically correct.

If it quacks like a duck... ???

What, no sense of humor to be found in Portugal?