MODELS: Fix UV of g_sawnoff

[DerpedCrusader]

adjust the UV map for the sawed off shotgun to match the texture

[MotoLegacy]

This didn't require modification of the blender mesh?

[DerpedCrusader]

There isn't a blender mesh, I'd say they aren't really needed, as they're extremely simple. i simply imported the .mdl file, edited it, and re-exported

however, I can make one if you want

[MotoLegacy]

Thanks for clarifying. We will need them properly later. LGTM