I have no idea what the military nomenclature calls these things...I think it's the PEQ box. This is ths Guarder version. Detail is much sharper than the ICS version, and the method of getting the battery in and out of the box is much better with this one. This is just for the box (all decals included), no battery. This will fit any RIS system.
I'll trade it straight across for an M4 standard mag, or $25.00.