Installation: 1. Open OpenIV. Go to the folder Grand Theft Auto V/update/x64/dlcpacks/patchday8ng/dlc.rpf/x64/models/cdimages/weapons.rpf and replace the files from the archive. There are two versions of the mod, with and without stock. You can select this in the archive. With stock: Stocked, without: Non-stocked. Two versions can be seen in the screenshots.