That's one privilege I enjoy as an active duty service member. The ability to buy switchblades (automatic) such as this:
California has some harsh laws for edged weapons.
* Summary: Anything capable of ready use as a stabbing weapon is illegal. All concealed knives are a felony (except non locking folders).
* Max length: chaotic
* Specifically illegal: Switchblades, gravity knives, exotic conceal methods (pen, lipstick, whatever)
* Relevant laws: PC 653K, PC 12020(24)
o Note that interpretations by cops and judges are wildly varied. Police have actually told law-abiding citizens to break the concealment laws, and a judge has deemed a blunt-point knife (Spyderco Mariner) a stabbing weapon.
* Quirks: Pens may be illegal (potential stabbing weapon).
* Local restrictions:
o Los Angeles
+ Three inch limit for open carry without a good explanation.