This is an updated and standardized set of plans derived from Professor Parabellum's OBAS-12, introduced in his "Do-It-Yourself Full Auto Assault Shotgun" handbook.
These schematics were created by Big_Butterscotch3855 as expansions upon the original schematics released by Professor Parabellum. They include much more detailed measurements and a detailed BOM. The original Professor Parabellum release is also included at the end.
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