Sec. 1241. Definitions. 1242. Introduction, manufacture for introduction, transportation or distribution in interstate commerce; penalty. 1243. Manufacture, sale, or possession within specific jurisdictions; penalty. 1244. Exceptions. 1245. Ballistic knives. (a) Prohibition and penalties for possession, manufacture, sale, or importation. (b) Prohibition and penalties for possession or use during commission of Federal crime of violence. (c) Exceptions. (d) “Ballistic knife” defined.