The slat armor is also only effective against the RPG-7 type warheads, where the fuse is in the nose and crushing the side of the warhead keeps the electric det

The slat armor is also only effective against the RPG-7 type warheads, where the fuse is in the nose and crushing the side of the warhead keeps the electric detonation signal from getting to the detonator. Other warheads will detonate when they hit the slat armor. With the net result of improved standoff distance. Most warheads don't incorporate enough stand off because it's hard to do so. The extra standoff actually improves penetration. That said, the AT4 is perfectly usable for side shots, such as in an ambush.