As far as I'm aware of the files from fps free and fps-files, I don't need any confirmation from there, as I know that the media is/was freely available (Stuff from fps free/fps-files is now on black fox's website)
As for EAI guns, model pack 9/10-ers will have to show me that you have ordered it via the account order history. (You may watermark the screen just for your own satisfaction). The GCS-ers will have to show me that they have purchased the weapon. (You may watermark the screen just for your own satisfaction)
Note: You
MUST have permission from the author of the weapon you want rigged.
Another Note

: Some weapons give problems when being rigged to some eai weapon animations via fragmotion. I'll try using milkshape for your weapons just in case. If there are further problems with the weapon, then I will try my best to rig a weapon of my choice which will meet your requirements
Plus I will
not be able to rig the weapons before 28th December.
-Abdul Ahad