Quave11

I am a drafting student and am looking for a fun, interesting challenge and so I turned to Halo. I found some pistol models online, but it was just the models and no dimension details. I can figure out the dimentions on my own based on master chiefs body measurements and ratios, but being a student and all, my freetime isnt really free and would rather have some basig dimensions to work from. So, my question is: is the specs for the halo weapons anywhere online?