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Re:New York Wants to Ctrl+Alt+Delete Your 3D Printer by int_19h on Wednesday February 04, 2026 @01:28AM (#46882219)
FCUs are not tracked in US (aside from full auto trigger groups, which however are classified as "machineguns" in their own right).

Receivers are tracked.

Re:New York Wants to Ctrl+Alt+Delete Your 3D Printer by hrimfaxi on Wednesday February 04, 2026 @08:09AM (#46885390)
That depends entirely on the gun. Sig "receivers" are just frames and the FCU is the controlled element. At least in the p320.