The M4E1 Complete Lower Receiver is the perfect base for your custom AR-15 build. This complete lower features Aero Precision's new M4E1 Lower Receiver with an A2 Grip. M4E1 Stripped Lower Receiver – Anodized Black A2 Grip – Black Mil-spec Lower Parts Kit AR15 Rifle Receiver Extension AR15 Rifle Buffer and Spring This complete lower does not include a stock. Mfg: Aero Precision
