Another gem below from this doc. This is going to be a real ****-storm for some folks so personally, if this nonsense applies to you, I wouldn't be in a rush to "comply". You have 120 days to see how this shakes out, and I'm guessing the more people that sign-up immediately, it will just allow the fatf to say in court, "look how many people are already complying so this why you shouldn't strike our ruling "not a law" down"... But of course none of the preceding is legal advice.
page 247 - 248
The Department disagrees with the commenter who suggested that there will be financial implications resulting from the removal and replacement of imported parts for owners who imported pistols and added a “stabilizing brace.” The commenter incorrectly interpreted 18 U.S.C. 922(r) as requiring the removal and replacement of imported parts to comply with section 922(r). Section922(r)generally makes it unlawful“for any person to assemble from imported parts any semiautomatic rifle,” and 27 CFR 478.39 provides that a person may not assemble a semiautomatic rifle using more than 10 of the imported parts listed in the relevant paragraphs of the regulation. The criminal violation under 18 U.S.C. 922(r) is for the “assembl[y]” of the semi-automatic rifle; therefore, modification of this kind of firearm through the removal of the relevant parts would not cure the 922(r) violation because the “assembl[y]” has already occurred. Nevertheless, for the purposes of the costs outlined in the standalone RIA, ATF assumes this group may use another scenario, such as destroying the firearm or turning it in to ATF, by using the population derived from bump-stock-type devices as a proxy.
page 247 - 248
The Department disagrees with the commenter who suggested that there will be financial implications resulting from the removal and replacement of imported parts for owners who imported pistols and added a “stabilizing brace.” The commenter incorrectly interpreted 18 U.S.C. 922(r) as requiring the removal and replacement of imported parts to comply with section 922(r). Section922(r)generally makes it unlawful“for any person to assemble from imported parts any semiautomatic rifle,” and 27 CFR 478.39 provides that a person may not assemble a semiautomatic rifle using more than 10 of the imported parts listed in the relevant paragraphs of the regulation. The criminal violation under 18 U.S.C. 922(r) is for the “assembl[y]” of the semi-automatic rifle; therefore, modification of this kind of firearm through the removal of the relevant parts would not cure the 922(r) violation because the “assembl[y]” has already occurred. Nevertheless, for the purposes of the costs outlined in the standalone RIA, ATF assumes this group may use another scenario, such as destroying the firearm or turning it in to ATF, by using the population derived from bump-stock-type devices as a proxy.

