The M5 complete lower receiver serves as an optimal foundation for custom big-bore AR configurations. This assembly incorporates Aero's custom-designed M5 lower receiver enhanced with a MOE SL grip and MOE SL-S carbine stock. The M5 lower receiver by Aero Precision establishes a benchmark for big-bore AR builds. Constructed from 7075-T6 aluminum, this enhanced forging is compatible with standard AR-308 components and magazines. It features several advanced engineering enhancements, including a threaded bolt catch roll pin, an integrated trigger guard, an upper tension screw, a threaded takedown pin detent recess and an expanded magwell flare. Additionally, it includes custom takedown and pivot pins, along with an extended magazine catch button, all of which are part of this assembly.

The Aero Precision complete lower for .308 Win serves as a high-quality and versatile foundation for constructing a custom AR-15 style rifle
The lower receiver is engineered to support the .308 Win cartridge, rendering it suitable for diverse applications such as hunting, target shooting and tactical operations

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