Now the weapons got improved from "simple" to "enhanced" (they were like that already earlier...but this time the update makes them more useful).
Anyway, additional features are:
*additiona bones (made by myself);
*bodygroupable parts;
*proper centering;
*additional skins according (festive and BFE themed) made by https://steamhost.cn/steamcommunity_com/id/pelkozz , https://steamhost.cn/steamcommunity_com/profiles/76561198831734370 and https://steamhost.cn/steamcommunity_com/id/zxtto_dxmanns (except the Tsar one);
*firing animations (made by myself);
*adjusted sizes (L4D references).

Initial addon creation.