Aero Precision’s M5 .308 Complete Lower Receiver is the perfect base for your custom big-bore AR rifle. Save when you buy it complete and let their specialist do the installation for you!

Features :

• Works with standard AR 308 components and magazines
• Rear takedown pin detent hole is threaded for a 4-40 set screw
• Bolt catch is threaded for a screw pin (no roll pin needed)
• Integrated trigger guard
• Selector markings will work with 45, 60 or 90 degree safety selectors
• A2 Grip
• Installed lower parts kit
• Receiver extension
• 308 carbine buffer and spring