The Walther Gewehr 43 is a semi-automatic rifle feed by an detachable box magazine of 10 rounds, it could be loaded with Kar98k's 5-rounds stripper clip without removing the magazine. The G43 was a part of the semi-automatic rifle program of the Wehrmacht, this programm was ramped up with the apparition of the russian SVT40.
The G43 use the same mechanism than the SVT40, but it have a simplier and sturdier design which make it also lighter. this rifle was reliable and issued mostly to elite troops as the Waffen SS. ZF4 optic could be mounted by a mounting rail on the right side of the gun, making it usable by sharpshooter unit.
400.000 Gewehr 43 were produced from 1943 to 1945.
Scoped version here
(x2) and here (x3)