Carrying a gun while hiking is legal on most U.S. public lands, but the rules shift as you move from one type of land to another and depend on the state you’re standing in. A single day hike can cross a national forest, BLM acreage, and an Army Corps reservoir without a sign at each boundary, and each of those has different firearm rules. The biggest mistake hikers make is assuming that because carry is legal on one type of federal land, it’s legal everywhere on the same terms. It isn’t.
Start With Your State’s Carry Law
Almost every federal land type ties its firearm rules back to state law. If your state doesn’t let you carry, no federal rule overrides that. Carry comes in two forms: open carry, where the firearm is visible in a holster, and concealed carry, where it’s hidden. States treat them differently.
As of early 2026, roughly 29 states have adopted “constitutional carry” or permitless carry, meaning eligible adults can carry concealed without a government-issued permit. The rest require a concealed carry permit, which usually involves a background check and a safety course. Even in a permitless state, a permit is worth getting if you hike across state lines, because reciprocity agreements usually require a physical permit from your home state.
Reciprocity is where road-trip hikers get burned. Some states honor every other state’s permit, some honor only permits from states with comparable training, and a handful honor none. Carrying concealed in a state that doesn’t recognize your permit is a criminal offense, and not knowing the rules is not a defense. Check every state on your route before you leave.
National Parks
Federal law protects your right to possess a firearm in any National Park System unit, provided you’re not otherwise prohibited from having a gun and your possession complies with the law of the state the park sits in.1Office of the Law Revision Counsel. 54 USC 104906 – Protection of Right of Individuals To Bear Arms If the state allows concealed carry with a permit and you hold one, you can carry concealed in that state’s national parks. Same logic for open carry in states that allow it.
Discharge is where parks are strict. Firing a weapon in a park is banned except in narrow circumstances: authorized hunting in specific park units, fishing, or target practice at designated facilities built for that purpose.2eCFR. 36 CFR 2.4 – Weapons, Traps and Nets Most parks have none of those designated areas. You can carry a loaded handgun on a Yellowstone trail, but firing it at a stump is a federal violation.
Self-defense is a gray area. No NPS regulation explicitly carves out a self-defense exception for discharging, but general federal self-defense principles still apply. If a grizzly charges and you shoot, you’d be relying on a necessity or self-defense argument after the fact rather than a clear regulatory green light. The law doesn’t pre-authorize the shot, but it may excuse it.
National Forests
National forests are considerably more permissive than parks. The U.S. Forest Service defers to state and local law for both carry and discharge, and hunting is common throughout the system during established seasons.
Recreational target shooting is generally allowed, but you cannot shoot within 150 yards of a residence, building, campsite, or developed recreation area, or across a forest road or body of water.3Forest Service U.S.D.A U.S. Department of Agriculture. Shooting Sports and Ranges Individual forests sometimes add restrictions through forest-specific orders, especially during high fire danger. Those closures can temporarily ban all target shooting or all discharge within certain areas, and they change seasonally.
If you’re carrying for wildlife protection in backcountry, the practical difference matters: discharging to defend yourself against an aggressive animal in a national forest is far less legally complicated than in a national park, because discharge itself isn’t categorically banned.
BLM Land
Bureau of Land Management land follows state and local firearm law for both possession and use. Most of it is open to hunting and recreational shooting. Discharging at developed recreation sites, including campgrounds and trailhead facilities, is prohibited.4eCFR. 43 CFR Part 8360 – Visitor Services Violations can bring fines up to $1,000 and up to 12 months in jail.
BLM land dominates the West, and popular hiking areas in Nevada, Utah, and Arizona cross BLM ground without obvious boundary markers. A topo map or a land-management app with boundary overlays is more useful than you’d think.
Army Corps of Engineers Land
This is where most hikers get surprised. Army Corps land, which surrounds thousands of reservoirs, lakes, and waterways, has some of the strictest firearm rules on federal land. Federal regulation flatly prohibits possessing loaded firearms on Corps-managed land and water unless you’re a law enforcement officer, actively hunting under authorized conditions (with the firearm unloaded during transport), using an authorized range, or hold written permission from the District Commander.5eCFR. 36 CFR 327.13 – Explosives, Firearms, Other Weapons and Fireworks
Unlike parks or BLM land, Corps land does not defer to state carry laws for general possession. A valid permit that lets you carry in a national park a few miles away is worthless at a Corps reservoir. If you hike around Corps-managed lakes and trails, leave the firearm unloaded and cased, or leave it behind.
Bureau of Reclamation Land
Reclamation land, including many western reservoirs and their surroundings, takes a middle position. You can possess firearms on Reclamation lands and waterways as long as you comply with federal, state, and local law, subject to two limits: no weapons at or inside a Reclamation facility, and you must follow rules set for special use areas designated by an authorized official.6eCFR. 43 CFR 423.30 – Weapons, Firearms, Explosives, and Fireworks on Bureau of Reclamation Facilities, Lands, and Waterbodies Discharge is limited to lawful hunting and authorized shooting ranges, and only when you’re also complying with state and local law.
Some Reclamation recreation areas are run by state or local partner agencies, such as a state park surrounding a federal reservoir. In those cases, the partner agency’s firearm rules apply within their operating area, so a single body of water can end up with a patchwork of rules along its shoreline.
National Wildlife Refuges
National Wildlife Refuges allow concealed carry of loaded, operable firearms in accordance with state law, similar to national parks. Outside that concealed-carry provision, firearms on refuges are restricted to public hunting under refuge-specific rules, unloaded and cased transport in vehicles along designated routes, and authorized scientific or special-purpose permits.7eCFR. 50 CFR 27.42 – Firearms
If your state allows concealed carry, you can hike armed through a refuge. Open carry, even in a state that generally permits it, may not be covered by the refuge regulation’s concealed-only provision.8U.S. Fish & Wildlife Service. Firearms on National Wildlife Refuges
Tribal Land
Some trails cross or border tribal reservation land, and the rules here are fundamentally different. Tribal governments are sovereign entities that predate the Constitution, and the Second Amendment does not apply on tribal land. Tribes have authority to regulate firearms on their territory however they choose, including banning them entirely. In practice, most tribes have not adopted rules dramatically different from the surrounding state, but the legal authority to do so exists. If your route crosses reservation land, contact the tribal government or its police department directly. Assuming your state permit extends onto tribal land is a mistake with real consequences.
Federal Buildings Are Always Off Limits
No matter what type of public land you’re on, carrying a firearm into a federal facility is a federal crime. A federal facility is any building or portion of a building owned or leased by the federal government where federal employees regularly work.9Office of the Law Revision Counsel. 18 USC 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities On public lands that includes visitor centers, ranger stations, administrative offices, and fee buildings. The prohibition applies whether a sign is posted or not.
The penalty is a fine and up to one year in prison. If prosecutors show you brought the firearm with intent to commit a crime, the maximum jumps to five years.9Office of the Law Revision Counsel. 18 USC 930 – Possession of Firearms and Dangerous Weapons in Federal Facilities Before walking into any building on federal land, secure your firearm in your vehicle.
If You Have To Fire in Self-Defense
Shooting an endangered or threatened animal adds legal complexity beyond the discharge rules for whatever land you’re on. The Endangered Species Act imposes severe penalties for killing a protected species, but the law provides an explicit defense: if you can show by a preponderance of the evidence that you acted in a good-faith belief you were protecting yourself or another person from bodily harm, you’re shielded from civil penalties and criminal prosecution under the Act.10U.S. Fish & Wildlife Service. Endangered Species Act – Section 11 Penalties and Enforcement
The key phrase is “good faith belief.” Shooting a grizzly charging your group from 20 feet away is a different situation from shooting one 200 yards off eating berries. Expect an investigation after any discharge involving a protected species on federal land. Document everything immediately: photos of the scene, distances, the animal’s behavior, your position. Those details will matter.
Getting Your Firearm to the Trailhead
Federal law provides a “peaceable journey” protection: if you can legally possess your firearm at your starting point and your destination, you can transport it through states in between, even states that wouldn’t otherwise let you carry.11Office of the Law Revision Counsel. 18 USC 926A – Interstate Transportation of Firearms
The conditions are strict. During transport, the firearm must be unloaded, and neither the gun nor ammunition can be readily accessible from the passenger compartment. A trunk works. In an SUV, pickup, or other vehicle without a separate trunk, the firearm and ammunition must be in a locked container that isn’t the glove compartment or center console.11Office of the Law Revision Counsel. 18 USC 926A – Interstate Transportation of Firearms
The protection covers transport, not extended stops. Gas and bathroom breaks still count as in transit. An overnight hotel stay in a state where you can’t legally possess the firearm weakens the defense considerably. Plan routes and stops accordingly.
Age Rules for Younger Hikers
Federal law prohibits anyone under 18 from possessing a handgun, with narrow exceptions for hunting, target practice, and farming with written parental consent.12Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts There is no federal minimum age for possessing a long gun like a rifle or shotgun. Many states set their own minimums higher than federal law, so a 16-year-old who can legally carry a rifle under federal rules might still violate state law depending on where the trail is. If you’re hiking with younger family members who will carry, verify both federal and state age thresholds.
Quick Reference by Land Type
- National Parks: carry follows state law; discharge prohibited except for authorized hunting and, potentially, self-defense.
- National Forests: carry and discharge follow state law; no shooting within 150 yards of developed areas or across roads and waterways.
- BLM land: carry and discharge follow state law; no discharge at developed recreation sites.
- Army Corps land: loaded firearms prohibited unless actively hunting or at an authorized range. State carry permits do not apply.
- Bureau of Reclamation land: carry follows state law; no weapons in Reclamation facilities; discharge limited to authorized hunting and ranges.
- National Wildlife Refuges: concealed carry follows state law; discharge limited to authorized hunting and refuge-specific rules.
- Federal buildings on any land: firearms always prohibited; up to one year in prison for violations.
- Tribal land: tribal law controls; the Second Amendment does not apply. Contact the tribe directly.
Boundaries between these land types aren’t always marked on the ground. A mapping tool that displays land ownership overlays is one of the most practical things you can bring, right alongside the firearm itself.