+1 for the RRV. Very versatile type of vest with the back panel / MAP / Hydration Pouch combinations, plus the foldable dib like FOX mentionned to make it a chest rig.
I own one and i'll honestly the best purchase of gear so far.
West Coast EOD Supporter.
// Bang One, Bang Em All !
// In war, it's not who's right, but who's left.