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 of7.
Caliber: Multi-Caliber
Caliber: Multi-Caliber
