This legislation establishes a framework to address the importation and proliferation of machinegun conversion devices, which are defined as parts designed to convert a weapon into a machinegun. It mandates a coordinated federal response to prevent the trafficking of these dangerous items. The bill also introduces new reporting requirements and expands forfeiture provisions related to illegal machinegun activities. Specifically, the Attorney General, Secretary of Homeland Security, and Secretary of the Treasury must develop and implement a comprehensive strategy within 120 days to detect, intercept, and seize machinegun conversion devices. This strategy will optimize federal law enforcement capabilities, enhance coordination with state and local agencies, and improve efforts to trace the origin of seized devices, including those produced domestically or using 3D printing technology. The bill also requires regular reports to Congress detailing the progress and effectiveness of this strategy. Additionally, it amends the Internal Revenue Code to allow for the forfeiture of proceeds derived from the illegal trafficking of machineguns, strengthening financial penalties.