They seem to have forgotten the printed frame/receiver rules msp says must be serialized by the 30th day after completion and completely nullifying the requirements on 3d printed peices.
So if we print our recievers/frames we have 30 days to serilize them is what im reading. Essentially print use for 29 days destroy and reprint and you're good
So just add a recessed rectangle in the plastic for a metal plate? What is the minimum dimensions that the plate has to be for the maryland required markings? Have the plate stamped and gorilla glue the plate in the recess as any force that you try to apply to the plate will cause the plastic to...