The Aero Precision M5 stripped lower receiver is a mil-spec-dimensioned foundation intended for AR-10/.308 style builds. It is machined from 7075-T6 forged aluminum and finished with a black hardcoat anodize for durable corrosion resistance. The receiver is compatible with standard AR-308 components and magazines and includes an upper tensioning set screw to fine-tune fit between upper and lower. This component is sold as a stripped lower receiver and requires a lower parts kit, stock, and other components to complete a functional rifle.
Key Specifications
- The receiver is designed for the M5 / AR-10 platform.
- Machined from 7075-T6 forged aluminum for strength and consistent fit.
- Finished in black hardcoat anodized for surface durability.
- Weighs approximately 12 oz.
- Works with standard AR-308 components and magazines.
- Includes an nylon-tipped upper tensioning set screw to fine-tune upper/lower fit.
- Features an integrated trigger guard.
- The bolt catch is threaded for a screw pin (no roll pin needed).
- Selector markings are compatible with 45°, 60°, or 90° safety selectors.
- The rear takedown pin detent hole is threaded for a 4-40 set screw.
This stripped lower provides a precise, mil-spec foundation for AR-10/.308 builds and is well suited to builders who prioritize proper fit and durable materials. Its layout and features simplify installation of aftermarket selectors, grips, and standard AR-308 components, making it a practical core component for a high-quality rifle build.
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