elevation so with the turret facing forward after the gun becomes completely vertical it can now swing to point literally backwards to form a angle with the upper part of the rear of the vehicle that would be an almost ridiculous design for starters why would a degree elevation be desirable at all maybe someone thought the vehicle should be able to self destruct that way obviously there's a mistake both in the article and the source the vehicle has a elevation which seems more logical foss christopher f jane's tanks and combat vehicles recognition guide ed harper collins pp i believe the article should be corrected