Lower Parts Kits and Lower Build Kits

AR15/AR9/AR40 - Lower Parts Kit - LPK - LRPK - Mil-Spec

5 Pack - AR15/AR9/AR40 - Lower Parts Kit - LPK - LRPK - Mil-Spec

AAO MFG

AR15/AR9/AR40 Lower Parts Kit Marksman Kit with 3.5lb Drop in Trigger LRPK LPK

AR-15 Carbine Lower Build Kit

AR15 Mil-Spec Lower Build Kit With Carbine 6 Position Buffer Tube

AR15 Pistol Lower Build Kit

6.5 Ounce Pistol Caliber Heavy Buffer 9mm/40s&w/357sig.