I'm not your little enemy's friend. But you sir are clueless. A 120mm APFSDS round is NOT shoulder fired. It would probably destroy the ambitious guardian trying to do so. It's a tank round sir. A antitank missile / recoilless rifle is a HEAT round. It will explode and in so doing blast through armour by the nature of the size of its explosive payload. It does not 'penetrate' through to hit something 10 feet behind. Since we're talking about realism here, I thought you ought to know. Instead of misleading the kids. Go google those terms or look them up on wiki if you please.