if shtf but you formed a well regulated militia, how would you best replace the role of an automatic rifleman? assume you started with any civilian legal materials that don't require a tax stamp the NFA doesn't necessarily apply anymore.
would you be better off putting an AR on a bipod with a drum mag or starting with something like the m249s? Are you better off with binary triggers, modifying the mechanism, making DIASes, making rudamentary bump stocks, or just teaching the operator to bump fire by hand?