3 × Anderson Manufacturing AM-15 Stripped Lower Receiver – Open – Anodized Black

1 × NBS Mil-Spec M4 Carbine Stock; 1 × Discount Mil-Spec Carbine Buffer / Receiver Extension Kit

1 × MFT BATTLELINK Minimalist Stock – Mil Spec – Black; 1 × Discount Mil-Spec Carbine Buffer / Receiver Extension Kit; 1 × ODIN Works Complete Lower Parts Kit

1 × KAK AR-15 H2 Heavy Buffer; 1 × Sprinco AR-15/10 Buffer Spring – Blue

3 × Anderson Manufacturing AM-15 Stripped Lower Receiver – Closed – Anodized Black

1 × Aero Precision AR-15 Assembled Upper Receiver; 1 × Aero Precision AR-15 Stripped Lower Receiver – Black