venture as the MG-101 (later designated MK 101, with the "MK" abbreviating the term Maschinenkanone, as an autocannon), the MK 101 cannon was a 30 mm...

The Rheinmetall-Borsig MK 103 ("MK" - Maschinenkanone) was a German 30 mm caliber autocannon that was mounted in German combat aircraft during World War...

The MK 108 (German: Maschinenkanone—"machine cannon") is a 30 mm caliber autocannon manufactured in Germany during World War II by Rheinmetall‑Borsig...

15 MG 17 MG 81 & 81Z MG 131 (Maschinenkanone and related types) MG FF and FF/M [1] MG 151, /15 or /20 [1] MK 101 MK 103 MK 108 [1] The official designation...