### Question
How is the "ballistic knife" defined?


### Answer
The term **ballistic knife** is defined in *15 U.S.C. § 1245* as follows -

> a knife with a detachable blade that is propelled by a spring-operated mechanism

#### Citation:
  - *15 U.S.C. § 1245*
  - Heading: **CHAPTER 29-MANUFACTURE, TRANSPORTATION, OR DISTRIBUTION OF SWITCHBLADE KNIVES**

