US Code
CHAPTER 29— MANUFACTURE, TRANSPORTATION, OR DISTRIBUTION OF SWITCHBLADE KNIVES
§ 1242. Introduction, manufacture for introduction, transportation or distribution in interstate commerce; penalty

Whoever knowingly introduces, or manufactures for introduction, into interstate commerce, or transports or distributes in interstate commerce, any switchblade knife, shall be fined not more than $2,000 or imprisoned not more than five years, or both.

Structure US Code