Aero Precision M5 Complete Lower Receiver w/ MOE Grip - No StockThe M5 Complete Lower Receiver is the perfect base for your custom big-bore AR build. This complete lower features our custom designed M5 Lower Receiver and is upgraded to include a MOE Grip. Save when you buy it complete and let our specialists do the installation for you! Our M5 Lower Receiver sets the standard for big-bore AR builds. This custom designed enhanced forging is machined from 7075-T6 Aluminum and works with standard AR308 components and magazines. It has been engineered with upgraded features, including a threaded bolt catch roll pin, integrated trigger guard, upper tension screw, threaded takedown pin detent recess and increased magwell flare.