Quote Originally Posted by Sawin View Post
That's how it reads to me... but furthermore, does it then also apply to adding a +1 base plate to a magazine?
Absolutely insane.
Not yet. They'll get around it by saying what they think they can get away with now, and then wait for future administrations to tighten up the regs so it will include punishment for those without a FFL making these mods and then telling those with a FFL that a mag base plate swap or shotgun tube extension will be considered manufacturing.