The Aero Precision M5 Stripped Lower is a bare, unassembled lower receiver designed for AR-10-style rifles, serving as the foundation for custom large-frame builds. As a stripped lower, it does not include internal components such as the trigger, safety selector, or buffer system, allowing builders to choose and install their preferred parts. This serialized component is considered the firearm under U.S. law and must be transferred through a licensed dealer. Crafted from high-quality 7075-T6 aluminum, the M5 Stripped Lower is precision-machined to DPMS High Profile specifications for compatibility with a wide range of AR-10 components. It features an integrated trigger guard for added strength and durability, as well as a flared magazine well for faster reloads. The lower is finished with Type III hard anodizing, providing excellent corrosion resistance and a sleek appearance. With its robust construction and versatile design, the Aero Precision M5 Stripped Lower is an ideal starting point for building a custom large-frame rifle in calibers like .308 Winchester and 6.5 Creedmoor.