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.
The Ghost Gunner 3S offers enhanced steel milling capabilities with a new closed-loop spindle control firmware, allowing for professional-grade DIY pistol optic cuts and 0% AR receiver manufacturing. Existing users can upgrade via firmware, with an optional mechanical kit for increased rigidity. The machine maintains its $2,500 price point, with milling times around 35-45 minutes for common operations.
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