Desert Tech QTRLR15B53 Quattro-15 Multi-Caliber Black for AR-15 Includes Quad53 Magazine
The Quattro-15 lower receiver accepts the Quadmag-53, Desert Techs 53 round magazine and standard AR pattern mags. The lower receiver is drop in capable will all standard AR-15 upper receivers. The Quattro-15s 53 round magazines give patriots the ability to carry a 210 round loadout with only 4 magazines instead of 7.