Guns like Bar and mini gun have rewarding gun skins that are rewarded after getting a certain amount of kills. I think they should be gun skins for common guns like for Sten , M4 , Ghost m4 , PBP , aa-12, Shipka, M107, and other common guns should get a skin. I'm not saying a golden skin but a skin that will stand out. Because not a lot of players have a gun that costs 200k gralats. So to be fair , they should be gun skins that can be gotten from a certain amount of kills.
Ex: Having 55k kills can get you cool skins for M4 and Ghost M4