the Germans actually even converted MG42s to the MG3 standard, there’s guns with the original 42 markings literally crossed out:
but tbf, if you have the guns and the manufacturing lines set up, you might as well use them - the Yugoslavs also used MG-42s, both captured and their own manufactured ones:
plus StG-44s:
the Czechoslovaks inherited half-track tooling (since the Nazis had converted tank factories in Czechia to making their own models), so they kept making them for a while:
the Soviets seized the V-2 manufacturing facilities and kept making them under a new name:
the Germans actually even converted MG42s to the MG3 standard, there’s guns with the original 42 markings literally crossed out:
but tbf, if you have the guns and the manufacturing lines set up, you might as well use them - the Yugoslavs also used MG-42s, both captured and their own manufactured ones:
plus StG-44s:
the Czechoslovaks inherited half-track tooling (since the Nazis had converted tank factories in Czechia to making their own models), so they kept making them for a while:
the Soviets seized the V-2 manufacturing facilities and kept making them under a new name:
and various other examples
A much greater sin than keeping the aesthetics of some guns is keeping the actual guys who ran the war