If I wanted to purchase a 45acp to 10mm conversion barrel for gen 5 glock 21, is anything about that illegal under the new laws? Would rather buy a new barrel than a whole firearm if there is nothing prohibiting me from doing so. I don’t see anything that would prohibit it but wanted to see if anyone knew/had experience with this kind of thing since 2023. Still might just buy a new glock 20 anyway but would like to know all of my options I guess.