How to choose a gun safe: five questions to answer before you buy

A gun safe is a long-term purchase that most people make once, often in a hurry after buying a first firearm or moving into a home with children. The marketing doesn't help: gun counts, "fireproof" badges and bolt diameters are designed to be compared, while the evidence that matters sits in the small print or isn't published at all.

This guide is the checklist we use to rank safes on this site. We don't lab-test safes; we check who certified what, to which standard, and what the maker's spec sheet actually says. The same questions work for any brand, in any store.

The five-question checklist

1. Threat: are you keeping out children and casual hands, a burglar with tools, a house fire, or all three?
2. Rating: which independent listing proves the safe handles that threat?
3. Size: will it hold what you'll own in five years, measured by interior dimensions rather than the gun count?
4. Placement: where will it sit, can the floor and the delivery path take it, and how will it be bolted down?
5. Humidity: how will you keep moisture from damaging what's inside?

Work through them in order. Each answer narrows the field before you get to the questions marketing likes to lead with, such as finishes, lights and door organizers.

1. What are you protecting against?

Three threats, three different kinds of container. A safe that's excellent at one can be weak at another, so name yours before you shop.

Children and casual access is the risk in any home where children live or visit, and it's the one where any locked container, used every time, does the job. Burglary needs a rated delay and a safe that can't simply be carried off. Fire needs a fire rating, ideally one an outside lab measured. A gun safe can cover all three, but only if it carries the evidence for each.

2. Which rating proves it?

For burglary: a UL RSC listing

The residential benchmark is UL 1037's Residential Security Container (RSC) listing. At Level 1, UL describes a "five-minute attack by one technician using common hand tools such as drills, screwdrivers and hammers"; Levels 2 and 3 use two technicians, ten minutes and more aggressive tools (UL). Above that sit commercial TL ratings under UL 687, such as TL-15 and TL-30 (UL 687), which are commercial grade and rarely sold on Amazon.

Look for the listing stated plainly on the maker's page or in a UL listing. Be wary of near-misses: "RSC-style", "RSC-rated construction" or "meets RSC standards" without a listing is marketing. A "UL-listed lock" means the lock was listed, not the safe. Our UL RSC explainer covers the levels in detail.

For fire: who measured it, at what temperature, for how long

A fire rating has three parts: a time, a temperature, and whoever ran the test. Under UL 72, "Class 350 rated devices are intended to protect paper records": the class is the maximum interior temperature allowed, and the time is how long the device held it in the furnace test (UL 72). Some gun safes carry a rating verified by ETL (Intertek); the AMSEC NF6036, for example, lists an ETL-verified 90 minutes at 1,200°F. Most gun-safe fire ratings are the maker's own claim. That doesn't make them false, but you can't check them. No safe is "fireproof"; our guide to safe fire ratings shows how to read the label.

For construction: steel you can see on paper

Steel gauge runs backward: a lower number is thicker. California's gun-safe standard is a useful yardstick. It asks for "minimum 12-gauge thick steel for a single-walled safe", a door of "at least two layers of a minimum 12-gauge steel compound construction" or one layer of 7-gauge plate, at least three 1/2-inch locking bolts, and a lock with at least 10,000 combinations behind a hardened plate; a UL RSC rating satisfies it as an alternative (11 CCR § 4100, via Cornell LII). A "California DOJ approved" badge tells you the maker says it meets those rules. It isn't a burglary test.

For the lock: a named lock and a known backup

Electronic and mechanical locks both work; what matters is that the maker names the lock (the safes in our research name locks from Sargent & Greenleaf, Dormakaba, SecuRam and others, several of them UL-listed) and that you know the backup. Some safes list a backup key; others list only external battery access. If a lock fails, use the maker's key or backup entry exactly as the manual describes, then contact the maker or a licensed locksmith.

3. How big does it need to be?

Buy for the collection you'll own in five years, and judge size by interior dimensions, not the number on the box. Gun counts are rack counts. SecureIt, a storage maker that argues against the practice, explains that capacity figures come from counting barrel slots across the interior and assume "no optics / no lights, lasers, or accessories" (SecureIt). Some makers publish a more realistic figure: Steelwater rates its Heavy Duty 20 at a maximum of 20 long guns but an average of 12 to 16.

Liberty's advice to first-time buyers is to "select the largest safe they can afford", noting that "the interior room tends to fill up more quickly than you might expect", and to measure doorways, halls and stairs carefully (Liberty Safe). Our gun safe size guide walks through the measurements.

4. Where will it go, and how will it be anchored?

Floor and access. Full-size safes are heavy: the Stealth UL28 is 529 lb, the AMSEC NF6036 977 lb, and the Liberty Presidential 25 1,021 lb. Before you order, confirm the floor can carry the weight in that footprint, and that the delivery path, including doorways, turns and stairs, is wide enough. Liberty, for one, publishes a minimum doorway width for each model.

Bolt-down. Anchoring isn't an accessory. UL's RSC standard requires safes of 750 lb or less to pass a drop test unless they are reliably mounted using the maker's installation provisions, and at least one maker, Steelwater, states that its burglary warranty requires the safe to be properly anchored. Use the maker's anchor holes and hardware or the anchors its manual specifies.

Location. Pick a spot out of view from windows and the front door, with room for the door to swing fully open, and ideally near an outlet if you'll run a dehumidifier or lights. Basements and garages make heavy safes easier to support but can be damp; plan for humidity there.

5. How will you control humidity?

A closed steel box traps moisture. Liberty Safe, citing the NRA, recommends "keeping the humidity in your vault room or gun safe between 30% and 50% and the temperature at 70 degrees F or below" (Liberty Safe). Put a hygrometer inside so you know the actual reading rather than guessing, then choose a dehumidifier that fits the safe's volume and your power situation. Some safes make this easier with a built-in outlet or power box; others need a rechargeable unit. Our best gun safe dehumidifiers ranking compares the options.

Types of gun safes

"Gun safe" covers several very different containers. This is how the main types map onto the tiers above, with an example of each from the models we've researched.

Weight and steel alone don't move a safe up a tier. The Steelwater HD593924 publishes a 9-gauge body and weighs 932 lb, but no lab has rated it, so it stays an access box on the evidence.

Beginner mistakes

• Buying on the gun count. It's a slot count for bare barrels. Size by interior dimensions and your longest, widest firearms.
• Trusting near-miss labels. "RSC-style", a "UL-listed lock" or an unqualified "fireproof" badge is not an independent rating of the safe.
• Treating California DOJ approval as a burglary rating. It's a statement that the safe meets California's construction rules.
• Skipping the bolt-down. An unanchored safe is easier to tip or remove, and some warranties require anchoring.
• Forgetting the floor and the delivery path. Measure doorways, stairs and turns, and check the floor before the truck arrives.
• No humidity plan. A sealed box and a damp room are a bad pairing. Measure first, then dehumidify.
• Weak code and key habits. A code a child has watched you enter, or a key in the nightstand, defeats any safe. Change default codes and keep keys hidden.
• Not checking recalls. Search the CPSC recall list for the brand and model before you buy, especially for biometric locks.

Where to buy a good gun safe

Online (including Amazon). Several listed safes are sold on Amazon, including the Stealth UL28 and UL14 and the AMSEC NF6036. Buying online is convenient, but confirm what delivery includes and plan the placement and anchoring yourself. Match the model number exactly: our research turned up listings whose model number or specs differ from the maker's page, so check the maker's page before you buy.

Dealers. Some of the best-documented safes are dealer-only, such as the AMSEC BFX6030 and the Liberty Franklin. A dealer can arrange delivery and installation; Liberty, for example, describes bolting its safes down from the inside as part of dealer installation.

Wherever you buy, ask for the burglary listing and the fire-rating source in writing, check the warranty terms (transferable or not, registration deadlines, whether claims go to your insurer first), and start with our best gun safes ranking if you want the shortlist done for you.