I swapped out the pouch I had on my Malaga for the one I got from Arch. It is now my Fire kit, attached to the Molle straps on the outside of the bag. I also Put on the Water Bottle carrier I got from him on the other side and it is SO close to taking my 40oz bottle WITH the SS cup that I might be able to stretch it out and get it to fit. IF not MAYBE That pathfinder 32oz bottle W/cup will fit.
Oh and I added a bic lighter and a poncho.