The M4E1 Complete Lower Receiver is the perfect base for your custom AR15 build. This complete lower features our new M4E1 Lower Receiver with an A2 Grip. Includes: M4E1 Stripped Lower Receiver – Anodized Black A2 Grip – Black Mil-spec Lower Parts Kit AR15 Carbine Receiver Extension AR15 Carbine Buffer and Spring These parts are installed This complete lower does not include a stock. Save on your initial purchase and choose any stock you prefer.