The NC Star M4 Chest Rig is an excellent buy. I purchased one a few months ago looking for a cheap chest rig that would hold all of my magazines and still have plenty of MOLLE space. I have read reviews for it on other sites that complain about the webbing being uneven, but as far as I can tell that is completely false. This rig is great at holding everything I need it to and distributing the weight evenly. It also breathes very well and I haven't had any problems with overheating. If you are looking for a MOLLE vest with built in mag pouches you won't find a better deal then this one.
-Plenty of magazine space (Holds 12 M16 style magazines, double stacked)
-Lots of MOLLE webbing
-built in pouch for hydration bladder
-has velcro, buckles, and button snaps to secure it
-quick release buckles
-allows for great flexibility and breathes well compared to full size vests
-magazines can be a tight fit when double stacking