No doubts! This is an original MG 42 in 7.92mm, although fire rate seems a bit slow. This is because it's simply using the heavy type bolt, which reduces the rate of fire to about 900 rpm. The maximum cyclic rate of the mechanisms of MG 42 is often exaggerated and inaccurate. This machine gun was designed for multiple purposes. The high rate of fire was for anti-aircraft use. The normal rate of fire was far lower than is often stated.
MG 42 was equipped with three types of bolt weights of different damping rates to control fire rates, a heavy, a medium and a light weight bolt, with the rate of fire ranging from 900-1200-1500 rpm. In infantry use the rpm was likely to have been lower than 900 rpm. The very light buffer has been reported to have achieved 1200 rpm in these guns. The effective rates of fire of the MG 42 was higher than allied weapons. Standard bolt weight is 900 gm. while the light bolt is 650 gm.
The effective rate of fire was much higher than that of the guns used by the Allies, but this was due more to the cooling rate of its six interchangeable barrels, than to the design otherwise. The MG 42 had a proven record of reliability, durability, simplicity, and ease of operation, but was most notable for its ability to produce a high volume of suppressive fire.