The text of the bill suggests that it would make printers capable of being reflashed with an open source firmware illegal to sell, as the legal requirements for the blocking would include preventing it from being circumvented. The law would also make having a printer sold mail-order into the state illegal entirely. It’s not clear how parts-built machines like Vorons would be handled.
It appears to only cover sales, however. Possession of files for firearm components would be made illegal, but seemingly not a printer without the restrictions.