Nice BOT Ironraven!
I've got a Maxpedition Jumbo S-type myself and like it a lot,although mine has both a velcro-top and a locking buckle..
Maybe add a rollypoly for option extra carrying-capacity? I also added a haul-strap, similair to this one:
http://zombiehunters.org/forum/viewtopic.php?t=27648
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''It's time for Plan B...'' ''We have a Plan B?'' ''No, but it's time for one.'' -Stargate SG-1