In response to your question, kitnut, the short answer is "No".
You've got;
M61 Vulcan 6-barrel 20mm
Gryazev-Shipunov GSh-6-23 - 6-barrel 23mm
GAU-8/A Avenger - 7-barrel 30mm
GAU-13/A - 4-barrel variant of GAU-8
Gryazev-Shipunov GSh-6-30 - 6-barrel 30mm
GAU-12/U Equalizer - 5-barrel 25mm
GAU-22/A - 4-barrel variant of GAU-12
T249 Vigilante - 37mm or 35mm variants
(Note: These are cannon only & the list doesn't include machine-gun calibred weapons like the mini-gun.)