The serial on the trigger is correct for a gun this early, and the electric pencil numbers on the internal parts are original german and correct also (not Russian). I see no evidence of renumbering (except for the buffer). It was standard german procedure to electric pencil small internal parts because they were hand fitted, but stamping them could deform them. Just like every other german gun, the earlier examples are numbered more extensively than later examples. It is correct for an mg34 of this year to be numbered on the trigger with a stamped number. Around late 1940/1941 they switched to electric pencil on the trigger, and then after 1941/42ish stopped numbering triggers entirely. The Russians did indeed use the electric pencil post war, but only on the major parts. They didnt normally renumber the smallest parts. On the large parts, they would typically grind off or strike out the german numbers, leaving very obvious scars. This gun has definitely been reblued, but it has NOT been renumbered, with the exception of the buffer, which clearly is marked off-center with a new number and the old number defaced yet visible. The stock cup is also a replacement, as is the stock. The original stock in this date range would have had the metal corners. The X does indicate Soviet capture, but this gun is mostly factory-original. I would be very proud to own that.