Desert Tech QTRMGB53 Quadmag-53 53rd 5.56x45mm NATO Fits Quattro-15 Lower Clear Plastic

The Quadmag-53 is a 53 round magazine and is compatible with the Quattro-15 lower receiver. The Quattro-15's 53 round magazines give patriots the ability to carry a 210 round loadout with only 4 magazines instead of 7.