Your links are incorrect, and the authors are not there as well.
SVD has been ported and modified from a stalker in the CSS, the real author of ZekaKorneev (RUS),
LINK.
Link on EX-41 , Tompson , UMP45 , also incorrect, EX41 of Fallout , UMP45 of STALKER, Tompson also from STALKER mods. Protecta by Александрыч(STALKER) ported in CSS. Provided you creators - incorrect.
On many works we do not know the real creators of the models, if someone provides evidence to immediately add to the authorship.
And yes, thanks for the link on gamebanana.com, I think there will soon make even more mods.