Maximum Legal Blade Length
- State Maximum: No maximum blade length in state law.
- Local Preemption: Yes — municipalities generally cannot regulate knives.
Categories of Knives
Kansas broadly permits ownership and carry of most knives, with limited exceptions tied to criminal intent and sensitive places.
Prohibited and Federally Regulated Knives
- Switchblades: Legal to own and carry under state law.
- Ballistic Knives: No specific state ban; federal interstate commerce restrictions apply (15 U.S.C. §§ 1241–1245).
- Throwing Stars: Possession with intent to use unlawfully is prohibited; avoid carry in sensitive places.
State-Specific Legal Knives
- Gravity Knives: Legal; no blade‑length limit.
- Butterfly/Balisong Knives: Legal; no special state restrictions.
- Assisted-Opening Knives: Legal; treated as ordinary folding knives.
- Concealed/Disguised Knives: Generally legal; subject to location‑based restrictions and intent‑based crimes.
Generally Legal Knives
- Pocket/Folding Knives: No state restrictions on blade length.
- Fixed/Utility Knives: No state restrictions on blade length.
Carry Restrictions
- Concealed Carry: No general restriction on concealed carry of knives.
- Open Carry: Unrestricted under state law; sensitive‑location limits still apply.
- Restricted Locations: Schools, courts, jails, secure airport areas, and posted buildings remain off‑limits.
Local Ordinance Preemption
- Preemption Status: State preempts local knife ordinances (transport, possession, carry, sale, etc.).
Significant Differences from Gun Laws
- Permits: No permit system for knives; no waiting periods/registration.
- Age/Use: Fewer age‑specific rules; intent‑based crimes (e.g., criminal use) govern misuse.
- Prohibited Items: Separate prohibitions exist for metal knuckles and certain weapons unrelated to knives.