1 × NBS Mil-Spec M4 Carbine Stock; 1 × Discount Mil-Spec Carbine Buffer / Receiver Extension Kit; 1 × OEM Mil-Spec AR-15 Lower Parts 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 × Trinity Force AR-15 Lower Vice Block; 1 × Trinity Force AR-15 Upper Vice Block

1 × KAK AR-15 A2 Buttstock Kit – Black; 1 × ODIN Works Complete Lower Parts Kit

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