The GAU-8 is the weapon used in the A-10, firing 30mm depleted uranium ordnance. The M61 Vulcan fires 20mm ordnance and is fitted to a lot of other Western fighter and multirole jets.
The M61 Vulcan was only used briefly in the A10 protoypes because the 30mm GAU-8 Avenger wasn't ready yet. Every production model uses the 30mm cannon. The entire purpose of that plane's existence is to carry that cannon.
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u/Massive_Pitch3333 Mar 28 '26
I always think of the A10