This guide details the construction of the Orca, a 3D-printed AR-15 variant, as presented by Hoffman Tactical. It emphasizes using specific filaments like Polymaker PLA Pro for general parts and Polycarbonate or Carbon Fiber Nylon for critical components requiring heat resistance and strength. Key design features include an angled magazine feed for reliability and innovative heat management for the barrel mount. The project aims to maximize the use of 3D-printed parts on a standard printer, with version 5.3 now released and community feedback encouraged for ongoing improvements.
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