CUSTOM: Aero Precision 26 inch barrel 6.5 Creedmoor. The Aero Precision M5 lower is a heavily upgraded, forged AR-10 platform. Machined from 7075-T6 aluminum, it features an integrated trigger guard, an upper tension screw, and threaded pins to eliminate roll pins, ensuring a precise fit with standard large-frame AR components. [1] Key Specifications & Features Material: Machined from 7075-T6 forged aluminum Platform: M5 (AR-10) Markings: "Cal Multi" marked to allow multi-caliber building Finish: anodized black,