Mathematical Apparel for Male MPs

Steps:
Open OpenIV and enable "Edit Mode".
Navigate to the following folder: mods\update\x64\dlcpacks\mpgunrunning\dlc.rpf\x64\models\cdimages\mpgunrunning_male.rpf\mp_m_freemode_01_mp_m_gunrunning_01
Drag and drop files from the SP folder!