I actually picked up a new backpack for my GHB. Until now I carried a variance of things in my truck and an empty bag so I could just grab what I needed. After reading several books and applying some common sense to various different hypothetical scenarios, I decided to create a singular bag with a modular design.
I picked up one of these. I already had a pouch that fits on it so it gives me an additional, detachable bag.
The only things I still have to pick up for a total GHB setup in a single package are:
Archangel stock for my Mosin and couple extra mags