Heavy Weapons Troopers,   The following is a tutorial on how to build an approved Heavy Weapons Trooper backpack for around $140 US. I wanted to provide nice illustration pictures and giving file size constraints I will have to break this up into a couple few parts.   PART 1   Part 2: http://www.whitearmo...k-build-part-2/ Part 3: http://www.whitearmo...d-part-3-final/     Items needed:   Any armor builder:   TK shoulder strap cover or similar, $8+   Amazon.com:   Oil Drain (