Are parts or kits which would convert a firearm into a machinegun subject to registration?

by National Gun Trusts February 16, 2018

Yes.

[26 U.S.C. 5845(b); 27 CFR 479.11]

Source ATF: https://www.atf.gov/firearms/qa/are-parts-or-kits-which-would-convert-firearm-machinegun-subject-registration

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