The MG 08 was the standard German machine gun. Adapted from the 1884 American Maxim, it caused widespread massacre unlike anything else before in warfare. The version shown in WWI: Source is the MG 08/15, a lighter and more mobile version of the rather large regular MG 08.
The MG 08/15 in WW1:SourceEdit
The MG08/15 is one of the more accurate weapons, and has the highest magazine capacity, at 100 per load.
The only aiming tip is to aim down the center.