trafficking
arms trafficking
https://en.wikipedia.org/wiki/Arms_trafficking
https://en.wikipedia.org/wiki/Category:Arms_trafficking
https://www.wikidata.org/wiki/Q2431020
The illicit trade of contraband small arms and ammunition, which constitutes part of a broad range of illegal activities often associated with transnational criminal organizations.
arms smuggling
gun smuggling
gun trafficking
gunrunning