I made this Winter Fleece ages ago along with the chest rig, Both have lazy uv mapping so excuse that. I might update it in the future with better mapping to help with custom textures.
For FiveM drag the files into EUP stream. If you dont have an EUP stream you can make one by creating a folder and in that folder placing an empty resource lua and a stream folder where the files go. If running on FiveM server you are required a key for the EUP to work!
Singleplayer:
Do this in OPENIV
\Grand Theft Auto V\update\x64\dlcpacks\mpgunrunning\dlc.rpf\x64\models\cdimages\mpgunrunning_male.rpf\mp_m_freemode_01_mp_m_gunrunning_01
Drag and drop into this folder. (Make sure to toggles it to a mods folder so it doesnt overright the orginal files).
Credits:
Max_