The 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 and UBR® Gen2 Collabsible Stock. 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. It uses custom takedown and pivot pins as well as an extended magazine catch button which are included in this assembly.
