For a while now I have wanted to create a 3D model of a set of guns. I understand a fair bit about modelling and have access to both 3DS Max and Maya. I have also watched many tutorials both professional and non-professional. However I haven't come across any that can give me the details I need. My first model I would like to attempt to create an UZI Model.
Could anyone reccomend to me what units I should import my reference images into my modelling software. Also what units should I really be working in. This project is for game development.