The Hera Arms H3L Magazine is designed for use in AR15 / M4 semi-automatic firearms. Specially manufactured without limiter for restricted markets, the H3L cannot be rebuilt or converted. Allows legal training with the feel of a 30rd magazine in various states. These modified polymer magazines have among other things a stabilized feeder and a mechanical stop so that they cannot be inserted too far when the breech is open. The H3L Mag can also be used on systems using a magazine well compatible to the AR15/M4 System.