The BCM MK2 RMS-M1T0 Mod-2 SOPMOD Comp Complete Lower Receiver is a Mil-Spec lower, ready to attach to any AR-15 upper receiver. This lower is outfitted with BCM furniture and BCM lower parts. FeaturesBCM Mod 2 SOPMOD StockBCM Mod 4 Pistol GripBCM Mil-Spec Lower PartsMK-2 Buffer SystemBCM PNT TriggerBCM Enhanced Trigger GuardBCM QD Sling Mount End Plate