Unlike video games, your unused and discarded rounds stay in the magazine after reloading in real life. Thus, its always a good idea to keep still-loaded magazines handy. This OD Green 341GN Nylon Large Foldable Dump Pouch is suitable for the task.
The dump pouch stays connected to your waist at the back when not needed. Its ready to start storing anything you throw inside. Of course, youre not limited to magazines. The dump pouch can hold practically anything as long as it fits.
The waistband has a large surface of MOLLE webbing to accommodate extra magazine pouches. Its good to allocate them for sidearm magazines or additional pouches for your M4.