This is a NCSTAR Vest known as the AR Chest Rig, model CVARCR2922B.
The AR Chest Rig Includes Six Double AR Magazine pouches with Bungee Retention Straps and Holds up to Twelve Magazines. It is also Hydration Bladder Compatible (Bladder Not Included).
Features:
PALS webbing on the Front and Back to Adapt your other accessories
Four Heavy Duty D Rings on Suspenders