MG 151
The Waffenfabrik Mauser MG 151 was a 15 mm machine gun later developed into the MG 151/20 cannon which was widely used on many types of German fighter aircraft used in World War II.
The 15 mm weapon was experienced as having a lackluster performance as the main gun on the early Messerschmitt Bf 109 F series and was soon replaced by the 20 mm version to become the standard cannon for the F-4 series onwards until it was surpassed by the 30 mm MK 108 cannon . Lather versions of the Focke-Wulf Fw 190 also carried this gun as their main armament.
It had a high muzzle velocity which makes for a stable trajectory and high impact speed/longer range than the low(er) muzzle velocity of the Oerlikon List of aircraft weapons of the WW2 Luftwaffe
