Space to fire. R to reload.
Thanks to @JosephModelCreator for the gun design! The Gewehr 43 or Karabiner 43 abbreviated G43, K43, Gew 43, Kar 43 is a 7.92×57mm Mauser caliber semi-automatic rifle developed by Germany during World War II. The design was based on that of the earlier G41(W), but incorporated an improved short-stroke piston gas system similar to that of the Soviet SVT-40. It was manufactured using innovative mass-production techniques.