In Polish, there's an idiom, "z armatą na wróble" - translating directly "with a howitzer, against sparrows". It applies as criticism of using an unreasonably powerful, heavyweight, expensive, or otherwise "oversized" solution to solve a small problem. Say, using a flame-thrower with napalm to kill a spider, or calling SWAT on a school kid who drew a pistol in a notebook.
"Overkill" is a close expression but not exactly implying the scale - using AK-47 against wild turkeys is overkill. Using a howitzer against sparrows though?
Is there an idiom or other expression to imply something is not just an overkill, but one unambiguously disproportionate?