I faced 2 of these mobile FLAK in a TCP/IP game this evening and found them fairly impervious to small arms fire. 3 turns of MMG and 60mm mortar also had no effect. I got one finally with a bazooka round and the other with an 81mm mortar barrage. (Don't ask who won) They appear to be very good value for the points spent, if nothing else, distracting resources that could be better used elsewhere.