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 and M4 Stock. Save when you buy it complete and let our specialists do the installation for you! Includes: M4E1 Stripped Lower Receiver - FDE Cerakote M4 Stock - Black A2 Grip - Black Mil-spec Lower Parts Kit Carbine Receiver Extension AR15 Carbine Buffer and Spring These parts are installed