the evacuator is poorly designed, poorly maintained, or damaged. Unprotected bore evacuators damaged by bullets have caused considerable problems in past conflicts, but up-armoring solved this problem. Bore evacuators are a common feature on most modern tanks and some self-propelled guns. The French Leclerc tank is a counterexample; it instead uses overpressure from an internal compartment to force gases outward. References Further reading External links What Are Those Bulges on Tank Gun Barrels? Armor Cast Armoured fighting vehicle equipment Artillery components Tank subassembly