Aero Precision M5 (.308) Complete Lower Receiver w/A2 Grip/M4 Stock - FDE

The Aero Precision M5 .308 Complete Lower Receiver w/A2 Grip/M4 Stock in Flat Dark Earth is the foundation for building a reliable, precision .308 AR-platform rifle. This complete lower receiver assembly is designed for operators, competitive shooters, and precision rifle enthusiasts who demand a modular platform capable of handling full-power rifle cartridges. As a complete unit, it arrives ready to pair with an upper receiver, eliminating the need for individual component sourcing and assembly.

Built to Aero Precision's exacting standards, this M5 lower receiver features a threaded rear takedown pin detent hole accommodating a 4-40 set screw for secure retention and tool-free operation. The integrated fire control group and bolt catch assembly are precision-machined from 7075-T6 aluminum, delivering the durability required in demanding tactical and field environments. The included A2 pistol grip and M4-type collapsible stock provide ergonomic control and adjustability across a range of shooter body types and gear configurations. Full compatibility with standard AR .308 components and magazines ensures parts availability and customization flexibility.

This complete lower receiver assembly is ideal for builders transitioning from 5.56mm AR platforms to .308 rifle systems, as well as experienced gunsmiths and armorer-level technicians constructing precision or duty rifles. Installation requires only mating with a compatible Aero Precision M5 .308 upper receiver and charging handle. The FDE (Flat Dark Earth) finish matches contemporary tactical equipment aesthetics while providing durable corrosion resistance. Whether assembling a long-range precision platform, a duty rifle, or a modular training system, the Aero Precision M5 complete lower receiver delivers the quality foundation required for repeatable accuracy and reliable performance across extended use cycles.