G43/k43
I just sold one for a friend, it was a K43. The K43s are less common than G43s. The G was changed to K in 1945, so there are less Ks than Gs.
I talked to the guy that bought the G43 from Marstar, he sent it back because of some alterations or replacement parts. He didn't go into details but he returned it and was more than pleased with the one he received from me. In all my years of collection I never saw a finer example.