Missouri maintains some of the most permissive knife laws in the U.S., allowing ownership and open carry of nearly all types without blade length limits or bans on switchblades. Concealed carry is broadly allowed except in restricted locations like schools or government buildings.
Allowed Knives
No knives are outright prohibited statewide—switchblades, automatics (OTF), balisongs, dirks, daggers, and fixed blades are all legal to own and possess. “Ordinary pocketknives” with blades ≤4 inches face minimal restrictions and can be carried concealed anywhere permitted. Larger blades qualify as “knives” under RSMo § 571.010(12) but lack carry bans.
Open Carry Rules
Open carry is legal statewide with no blade length cap or type restrictions. Brandishing in an angry manner violates RSMo § 571.030(1)(4), a misdemeanor. No statewide preemption exists, so check local ordinances in cities like St. Louis or Kansas City.
Concealed Carry Guidelines
Concealed carry of any knife is permitted outside prohibited areas, per 2023 updates to RSMo § 571.030 via CCS HCS SB 186—no blanket ban remains. Restrictions tie to firearm-prohibited zones under § 571.107: schools, churches, courthouses, aircraft, bars, and private property with no-knife policies. Blades >4 inches may draw scrutiny locally.
Prohibited Locations
| Area | Knives Banned | Statute |
|---|---|---|
| Schools/Churches | Yes | RSMo § 571.107 |
| Courthouses/Gov’t Buildings | Yes | RSMo § 571.107 |
| Aircraft/Bars | Yes | RSMo § 571.107 |
| Private Property | If Posted | Trespass Laws |
Vehicles follow carry rules—no special exemptions.
Penalties for Violations
Unlawful use (e.g., concealed in restricted spots) is a Class A misdemeanor: up to 1 year jail and $2,000 fine. Felonies apply for felons possessing or intent to harm. Minors face no unique knife bans.
Recent Changes
2023 reforms narrowed concealed carry offenses to restricted areas only, enhancing rights. As of 2026, no blade limits or new bans; OTF knives remain legal.
Practical Tips
Carry openly for clarity, obtain permission on private land, and verify local rules via city codes. Self-defense use follows stand-your-ground laws (RSMo § 563.031). For enthusiasts, Missouri’s lax stance supports EDC without worry.
SOURCES :
- https://www.couteaux-morta.com/en/missouri-knife-laws/
- https://knifeinformer.com/state-knife-laws/missouri/
