Missouri

Missouri has been permitless (concealed and open) since SB 656, effective Jan 1, 2017; RSMo §571.030 exempts anyone 19+ (18+ if military) who is not a prohibited possessor. Missouri is sometimes called 'anomalous open carry' because although state law is permissive, a few localities historically layered on their own rules before broader preemption — verify very locally if it matters (e.g., transit systems in St. Louis/KC).

Mo. Rev. Stat. §571.107(14): a concealed-carry permit does not authorize carrying into a church or other place of religious worship WITHOUT the consent of the minister or the person(s) representing the religious organization that controls the place of worship. Default is no; carry becomes lawful only with that affirmative consent.

RSMo § 571.107(1)(7) prohibits carry in the portion of an establishment licensed to dispense liquor by the drink that is primarily devoted to that purpose, but expressly exempts "any bona fide restaurant open to the general public having dining facilities for not less than fifty persons" that receives at least 51% of its gross annual income from food sales. Violating the location rule is a civil/administrative matter (denial of entry, then a citation), not itself a crime.

Missouri's concealed carry permit statute states plainly that it 'shall authorize the person in whose name the permit is issued to carry concealed firearms on or about his or her person or vehicle throughout the state' (Mo. Rev. Stat. § 571.215), and Missouri also has permitless carry (since 2017). No exception for boats/vessels appears in the statute, and a secondary source (TheGunZone) confirms carry is generally allowed while boating, fishing, etc. on Missouri waters.

RSMo §571.107 requires that any portion of a building where concealed carry is restricted be 'clearly identified by signs posted at the entrance to the restricted area' — carrying in violation is not itself a crime but can result in denial/removal from the premises and escalating civil fines against the permit. So whether a courthouse, DMV, or city hall is off-limits depends on whether that specific building/portion has posted the required signage.

Mo. Rev. Stat. § 571.107.1(10): a concealed-carry endorsement/permit does not authorize carrying onto higher-education property WITHOUT the consent of the institution's governing body; violation is not a crime on first offense but can trigger removal/citation and eventual permit suspension. A locked, unattended-vehicle exception exists. Depends on whether the specific institution has given consent.

RSMo § 571.107 allows a private business to exclude carriers via conspicuous signage or verbal notice; absent that, carry is presumptively lawful.

No MO statute requires advance owner consent; MO's concealed-carry statute (571.107) lets a property owner exclude by posting or personal communication, and general trespass law (569.140) otherwise requires notice — opt-out default. Citation not independently re-verified via direct fetch this session.

Missouri Revised Statute § 571.107, read directly from the official Missouri Revisor of Statutes site, restricts carry only in 'any area of an airport to which access is controlled by the inspection of persons and property' — i.e., the post-screening secure area. Public non-secure terminal areas (ticketing, baggage claim, curbside) are not restricted for a concealed-carry endorsement holder.

Missouri's concealed-carry statute (§571.030) explicitly exempts anyone 19+ (18+ current/honorably-discharged military) from the general prohibition when 'transporting a concealable firearm in the passenger compartment of a motor vehicle,' as long as it's otherwise lawfully possessed — no permit needed. A valid MO or reciprocal permit is also an independent basis to carry.

Mo. Rev. Stat. §571.107.1(17): a concealed carry endorsement/permit doesn't authorize carrying into 'any hospital accessible by the public' (though leaving the firearm secured in a vehicle on hospital grounds is expressly not an offense). The statute's 'accessible by the public' framing applies regardless of public or private ownership.

Missouri is permitless-carry, and this is the clearest statutory confirmation found in this entire study: §571.107.6 RSMo, governing how a political subdivision may restrict firearms in a publicly owned building, expressly provides that any such restriction 'shall exempt any building used for public housing by private persons, highways or rest areas, firing ranges, and private dwellings ... from any restriction on the carrying or possession of a firearm.' Highway rest areas are explicitly and affirmatively protected by name. Verified against the statute text directly.

Mo. Rev. Stat. §§ 571.121 / 571.230: a permit holder "must display the permit and a state or federal government-issued photo identification upon the request of any peace officer." Reactive display duty; no requirement to volunteer the information unprompted.

RSMo § 571.101.2(1): applicant must have "assumed residency in this state," OR be "a member of the Armed Forces stationed in Missouri, or the spouse of such member." No other non-resident route.

Mo. Rev. Stat. §571.030.1(10) bans firearms in/at schools and school-sanctioned functions; §571.107.1(10) confirms a concealed carry endorsement does NOT itself authorize carrying into a K-12 facility — entry there requires the consent of a school official. Narrow separate carve-outs exist for designated school protection officers and those transporting students.

Missouri Rev. Stat. § 571.107.2 is explicit: carrying in a location listed in subsection 1 (which includes, per subdivision (15), 'private property whose owner has posted the premises as being off-limits to concealed firearms by means of one or more signs... of a minimum size of eleven inches by fourteen inches') 'shall not be a criminal act but may subject the person to denial to the premises or removal from the premises.' Only if the person refuses to leave after a peace officer is summoned may they be issued a citation (up to $100 first offense, $200 second, $500 third) — still not treated as a criminal charge under this section.

RSMo § 21.750: the general assembly "occupies and preempts the entire field" of firearms legislation to complete exclusion of political subdivisions. Enacted via SB 656 (veto overridden Sept. 10, 2014).

Mo. Rev. Stat. § 571.107.1(2) says a CCW permit/endorsement does not authorize carrying within 25 feet of any polling place on election day (firearm-in-vehicle on the premises is separately exempted). Critically, a further provision of the same statute (quoted by the Missouri Revisor's site) states that carrying concealed in such a listed location BY A PERMIT HOLDER 'shall not be a criminal act' though it 'may subject the person to' other consequences (e.g., being asked to leave) — unlike states where it's a straightforward crime. So legally the outcome is a gray, decriminalized-but-still-'unauthorized' zone specifically for permit holders.

No state-level magazine capacity restriction found.

No extreme risk protection order or red flag statute found in Missouri.

Missouri state law (RSMo 571.020) only criminalizes suppressors, SBR/SBS, and machine guns when possessed 'in violation of federal law.' SB 273 (effective Aug 28, 2025) further affirmatively decriminalized suppressor possession, manufacture, transport, and sale at the state level. SBR/SBS are legal once the federal tax stamp/registration is complete. Pre-1986 transferable machine guns are legal once federally registered; Missouri imposes no separate state ban or added permit.

Stand Your Ground by statute: Mo. Rev. Stat. § 563.031.3(3) — no duty to retreat.

Missouri repealed its permit-to-purchase requirement in 2007 and has no current law requiring background checks on private firearm sales; Missouri law addresses only seller liability for knowingly transferring to a prohibited person, not a mandatory screening process.