Mauler schematics?


Me being the cheap foxtrot I am, are going to try my hand at a mauler, and instead of using clay for the ammo barrel, im going to use this steel wire I have, and hopefully have it turn out good/nice/well/whatever.
Any life-sized schematics for the mauler+some dimensions for the ammo barrel?

I got 3 refrence pics for it from the refrence pic gallery, but does anyone have any more?

Thanks alot guys/gals, your all really helpful.