Sure, some random slash somewhere on the rail housing, way outside the cannon's trunnion and base, you know, the stuff that's doing the actual aiming, suddenly turns the whole thing into a colossal monument of uselessness. Right.
Okay, maybe levering the rail up as forceful as that broke something in the suspension, but even so, that would have done a lot more damage than what was displayed and referred to.
Author, do you even gun??