Gun design forums

[Tokarev]

Does anybody know of a forum for discussion of designing the firearms from scratch?

[M-Tecs]

http://www.weaponeer.net

http://www.weaponsguild.com/forum/index.php

http://thehomegunsmith.com

http://www.gunplans.com

https://www.the-blueprints.com/blueprints/weapons/