I think it's very interesting that you now talk about realism, but when we have people circling SWAT weapon drops and they get detained with great force, we call it "powergaming" or "playing to win". How come you don't like that realism? or when we talk about how SWAT has 200 armor, we're saying "it's just a game", but now you want realism so you can hide a .50?
On-topic. Without selective realism, this suggestion makes no sense. The .50 cal is the best pistol from the ones that we have available on our server. ALL the other pistols don't even show on your back. It's a very obvious intended drawback. If you want the best pistol, other people are gonna see you carry it. If you don't, carry a heavy pistol.