The Classic Army M4 Flash Magazine is a 400 round high capacity mag without the need for the typical winding wheel you find on most others. Pulling away the metal base-plate reveals a rip-cord which, when pulled several times, winds the hicap to the point where it won't need to be wound again until it needs to be totally reloaded. Save yourself the trouble of stopping to wind that high capacity magazine every 30-50 rounds and hit them with 400 instead.
Classic Army M4 Flash Magazine Features:
-400 Round Capacity