[Tiburon65]

Saw their rifle mag holder first, neat idea, now they have a pistol version. Not sure I would need 5-7 mags at my fingertips, but some may. they have a comp rig that may help the competition shooters here. Here is their site: Home Garrett Industries - designs and manufactures leather lined and unlined kydex IWB, OWB, and custom holsters and tactical gear including the revolutionary new spring loaded mag carrier

And here is a gear review from Milspecmonkey
MIL-SPEC MONKEY