The Aero Precision M5 Assembled Lower is a partially assembled lower receiver designed for AR-10-style rifles, offering a foundation with pre-installed components for easier assembly. As an assembled lower, it includes the lower receiver with components like the trigger guard, bolt catch, and magazine release pre-installed. However, it does not include the fire control group (trigger assembly), buffer system, or stock, giving builders the flexibility to select these components based on their preferences. Made from durable 7075-T6 aluminum, the M5 Assembled Lower is precision-machined to DPMS High Profile specifications, ensuring compatibility with a variety of AR-10 parts and calibers, including .308 Winchester and 6.5 Creedmoor. The integrated trigger guard enhances strength and simplifies assembly, while the flared magazine well ensures faster and more reliable reloads. Finished with Type III hard anodizing, the Aero Precision M5 Assembled Lower is corrosion-resistant and built to last, making it an excellent choice for those who want a partially pre-built platform to streamline the customization process.