The work is devoted to the problem that leads to ambiguous judicial decisions in the area of arms trafficking: the lack of legal definitions of the concepts of “carrying”, “transportation” and «conveyance”, as well as the ontological contradiction in the definition of “decommissioned weapons”. Objective criteria for distinguishing between these concepts (subject of movement, presence of packaging (case, holster, or sheath), degree of isolation, and separate storage of ammunition) are proposed. The replacement of the term “decommissioned weapons” with “deactivated weapons” is substantiated.