In order to Customize it, use PAC3. To do that, once Pac is open, change the Group owner name from self to the dynamic object part of the editable emplacement. That way you can attach diffirent stuff that will follow the gun part itself, so you can create the custom weapon of your dreams. Here is something I made. https://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=2073475786