Aero Precision M5 Complete Lower (Carbine, Pistol, Rifle)


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The M5 Complete Lower Receiver is the perfect base for your custom big-bore AR rifle. Useful for .308/7.62, 6.5 Creedmoor, and 8.6 Creedmoor!

Check out our Cerakote options here!


  • 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
  • Accepts Battle Arms Development short throw safety selectors, but will work with any standard selector
  • No gap with aftermarket pistol grips


  • Aero Precision M5 Lower Receiver
  • A2 Grip
  • Lower parts kit
  • Appropriate Receiver extension
  • .308 carbine or rifle buffer and spring
  • These parts are installed

*Must Ship to an FFL

*Does not ship to localities where it is banned.

*Ships Free in 1-2 weeks

*Armoring adds 3-4 weeks, Cerakote adds 6-10 weeks.

*May require backorder.

Additional information

Weapon Format

Carbine, Pistol, Rifle

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