Hera USA Magazine, H3 Gen.2, 223 Remington/5.56NATO, 30 Rounds, Fits AR Rifles, Polymer, Olive Drab Green 13.11/OD The HERA H3T Gen-2 magazines feature a transparent frame allowing you to quickly check your round count. Constructed of high impact reinforced polymer with superior springs" you can expect superb function from HERA magazines.