German troops can be seen with Karabiner 98ks during the cleaning of the ghetto and during the Jews' internment in the Płaszów concentration camp.
Walther P38
A Walther P38 is only seen in one scene, when Goeth has to dig up and then burn the bodies from the liquidation of the Krakow ghetto. One of his men feigns madness and fires into the mass of burning corpses.
Mauser rifle with straight bolt handle
Some of the Germans are seen with Mauser rifles with straight bolt handles instead of K98K, which have bent bolt handles.
MP40
Some of the SS troops executing Jews in the apartment building are using MP40 submachine guns.
The Luger P08 appears to be the sidearm of choice in this film. All executions by pistol are done with Lugers. The Lugers used had to be flashpaper guns, and were likely retained in later scenes for continuity reasons.
During the scene where Goeth tries to execute Rabbi Lewartow for not making enough hinges, his Luger keeps misfiring. Goeth takes out a CZ 27, which will not fire either. He has to settle for pistol whipping the rabbi with the CZ 27.
Unknown revolver
In a quick editing mistake, the CZ27 is exchanged for a large revolver. Goeth drops it on the pavement when he walks away. This pistol is much too big to have come out of Goeth's pocket.
Mosin Nagant M91/30
Two German soldiers can be seen with Mosin Nagant M91/30s in the camp while rounding up Jews.