You could do an on collision thing for the weapons you are using. Also, Rky has an hp mod for bricks in his fort wars server.
On Collision Code:
function YourWeaponProjectile::onCollision(%this,%obj,%col,%fade,%pos,%normal)
{
if(%col.getClassName() $= "fxDTSbrick")
{
%col.delete();
}
Parent::onCollision(%this,%obj,%col,%fade,%pos,%normal);
}