Designed with the law enforcement officer in mind the Bradley and Guardian kits from TraumaPak offer an innovative way to rapidly don extra ammunition and medical supplies.
The Bradley: https://www.highthreatinnovations.com/product-page/Bradley-rapid-response-traumapak
The Defender: https://www.highthreatinnovations.com/product-page/the-defender-leg-rig-traumapak