These 3D tutorials have no example files so not sure whether they will fully work with ENIGMA or not. However they do include videos and the assets to create the 3D games which I thought people may find useful.
http://gmc.yoyogames.com/index.php?showtopic=625302
The tutorial also shows you how to model a basic gun.
The whole package can be downloaded from the sandbox as well.
http://sandbox.yoyogames.com/games/227608-gm-3d-video-tutorials
