This video details the process of milling a 0% AR-15 lower receiver from raw aluminum using a Ghost Gunner 3 CNC machine in approximately 5 hours. It highlights the unique 3-piece design required for the small CNC, specialized hardware like KNS Precision pins, and the potential fragility of a 3D-printed bolt catch insert. Despite these challenges, the build proved reliable during range testing with over 500 rounds.
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