AdrX003 Yeah, every point u talked about is correct, but Im not talking about CUSTOM GUNS.
The guns I mentioned are in game and designed by Treyarch before, like the AK47 and AK47U are in game campaign and MP5 is a wall buy gun in town zombies and MP40 and STG are in origins as u know.
The only thing needs to be done is plutonium team bring them from their own places to MP(Tell me if Im wrong cause I do not have specialized literacy)
The whole reason Im talking about this scenario is that plutonium is a succesful project and they do care about their community so If the devs are reading this SM2
is a good example of combining good things from all cods into one if plutonium continue to support more games, I think the amount of players will reduce little by little cause players will brodcast into different games( referring to empty 20 players per day for WAW | MW3 | and soon BO1)
Today state of COD is making players bored and they decide to comeback to old ones According to this and This
its a very good chance to grow for projects like plutonium if they show themselves.
(sorry for bad English, its not my mother tongue)

as you can see that shows nothing to me and I thought its cause of my connection but as I checked my connection (Tested in csgo Dota 2 and...) its ok and has no problem I will appreciate that anyone can give me a solution.