There's way too many mods installed that i've lost count, some mods when i have tried to install straight up don't even work + i only test the weapons from my save file where the character already has all the weapons, maybe if i could somehow make these weapons as like spawnable (DLC like?) weapons maybe it could work, but as of now i have no knowledge over that, im just gonna guess that my mods are somehow making them not appear so i gotta install the basic mods back again.
But thank you for trying to help me.

I did exactly as the you did, always place them inside the .rpf file and i deleted the last patchday folders that didn't work, the only weapon i could get working was the Up-n-atomizer model replace because it was in the christmas2018 folder, but the rest of the files wont replace, could it possible for some mods to mess up the models since i have quite a few mods installed?

Huh, very interesting... it didn´t work for me, i´ve tried every patchday folder and none of them work...
Am i screwed?

@H3llo Um yeah i still couldn't get them to work
Btw this is the mod i tried to get to work
https://www.gta5-mods.com/weapons/f0rest-s-mega-weapon-pack
I don't know what to do anymore.

Hello

Im having trouble with installing the weapon replace skin mods, i have everything installed what is required, but the "patchday8ng" folder doesn't work and i was wondering if Rockstar moved it again, because before that it was "patchday3ng" then they updated it to "patchday8ng" and now im not sure why it's not working, i tried to find help on forums and on YouTube, but i found nothing, everything is just outdated, but yeah i just can't get my skins to replace the vanilla ones, so is there like a new folder i should try?

Please can someone give any helpful tips or anything that could fix this problem?
Thanks