A used firearm can be the best value in shooting. Guns are not consumables — a well-made rifle or shotgun that has been looked after will outlast its owner, and the second buyer gets the same service life at a fraction of the price.
The risk is that condition is not obvious. Cosmetic wear tells you almost nothing about whether a gun is sound, and the things that actually matter are easy to miss if you do not know where to look. This guide covers what to check, what is cheap to fix, and what should make you walk away.
Before anything else: if you are handed a firearm to inspect, open the action and confirm it is unloaded yourself. Every time, including when someone tells you it is clear.
Wear is not the same as damage
The single most useful idea here. A gun with a worn finish, holster rub, and honest scratches may have been carried for twenty years and shot very little. A gun that looks immaculate may have had a hard, short life or been refinished to hide something.
Judge the parts that wear from use, not from handling: the bore, the throat, the locking surfaces, the action. Finish condition affects resale value; mechanical condition affects whether you should buy it at all.
Check on any firearm
The bore
The most important thing you will look at. Get light into it — a bore light, or a white sheet of paper angled into the ejection port — and look for:
- Sharp, clean rifling with defined edges. Rounded or faint lands mean a worn barrel.
- Pitting — small dark craters. Light pitting may shoot fine; heavy pitting in the throat or muzzle will not.
- A ring or bulge — a visible shadow line around the bore. This is a barrel obstruction that was fired through. Walk away.
- Copper or carbon fouling that has never been cleaned out. Not fatal, but tells you how the gun was treated.
A dirty bore can be cleaned. A worn or damaged one is a new barrel — see our cleaning guide for what normal fouling looks like versus real problems.
The crown
The very edge of the muzzle is the last thing touching the bullet, and damage there wrecks accuracy. Look for dings, uneven wear, or the tell-tale scoring of someone who cleaned from the muzzle with a steel rod for years. Re-crowning is a cheap gunsmith job, so it is a negotiating point rather than a deal-breaker.
Screws and pins
Chewed-up screw slots are the clearest sign of an owner who worked on the gun with the wrong tools. It rarely matters mechanically, but it tells you what else may have been done badly inside. Look for mismatched or missing screws too.
Rust versus patina
A grey-brown patina on old steel is stable and harmless. Active red rust is not — it is still eating metal. Check under the grips, along the bottom of the barrel, and anywhere moisture would sit. Surface rust cleans up; pitting left behind by rust does not.
The action
Work it repeatedly. It should feel consistent through the whole cycle — no grinding, no catching, no sudden slack. Function-check the safety, and confirm the firearm does not fire with the safety engaged.
Rifles specifically
- Throat erosion. The area just forward of the chamber wears first, especially on hot-rodded cartridges. Heavy erosion is the practical end of a barrel’s accurate life.
- Bolt lug engagement. Wear should be even across both lugs; uneven contact suggests a headspace or fitting issue.
- Stock and bedding. Check for cracks through the wrist and around the action screws — a cracked stock is common and often hidden under finish.
- Barrel-to-stock clearance. On a free-floated barrel, a slip of paper should pass along the channel.
- Scope mount holes. Confirm they are not stripped or filled.
Round count matters less on a bolt gun than what those rounds were. A .22 with 50,000 rounds through it may be fine; a magnum with 3,000 hot handloads may be finished. See our bolt-action rifle guide for what a healthy example looks like.
Handguns specifically
- Slide-to-frame fit. Some play is normal and varies enormously by design. Excessive rattle on a gun that should be tight suggests heavy use.
- Barrel lockup. With the slide in battery, the barrel should sit consistently. Check the locking lugs for peening.
- Extractor and feed ramp. Chips on the extractor claw and gouges in the feed ramp cause malfunctions.
- Revolvers: cylinder timing. Cock slowly and confirm the cylinder locks up before the hammer falls, on every chamber. Check the barrel-cylinder gap and look for end shake by pushing the cylinder fore and aft.
- Revolvers: forcing cone. Look for cracks or heavy erosion where the cylinder meets the barrel.
Revolver timing is the one most buyers skip and the one most likely to cost money. Our handgun buying guide covers what to look for in a shooter more broadly.
Shotguns specifically
- Bore condition and dents. Look down the barrel at an angle; a dent shows as a shadow. Small dents can be raised, ring bulges cannot.
- Choke threads. Remove the tubes. Seized tubes and damaged threads are common and expensive.
- Chamber length. Confirm what the barrel is actually marked for — do not assume.
- Break actions: lockup. Close it and check for looseness off the face. Excessive play means a re-fit.
- Semi-autos: gas system. Heavy carbon and a worn piston are cheap to remedy; a cracked bolt or receiver is not. See our semi-auto shotgun guide.
Cheap to fix, versus walk away
| Found | Verdict |
|---|---|
| Heavy fouling, dirty action | Cheap — clean it |
| Worn finish, holster rub, honest scratches | Cosmetic — negotiate on price |
| Damaged crown | Inexpensive gunsmith job |
| Worn springs, tired magazines | Consumables — budget a little |
| Chewed screws | Cosmetic, but inspect further |
| Light pitting away from the throat | Usually shoots fine |
| Seized choke tubes | Possible, but can get expensive |
| Ring or bulge in the barrel | Walk away |
| Cracked frame, receiver, or slide | Walk away |
| Revolver that fails to time | Walk away unless priced for a rebuild |
| Evidence of amateur trigger work | Walk away — this is a safety issue |
| Deep pitting in the throat or chamber | Walk away |
The trigger point deserves emphasis. A “tuned” trigger done by someone without the knowledge can produce a gun that fires when jarred or when the safety is released. If a seller volunteers that the trigger has been lightened and cannot say by whom, treat it as a gun that needs a gunsmith before it is fired.
Questions worth asking
- Roughly how many rounds, and what kind — factory or handloads?
- Has anything been replaced or modified? Are the original parts included?
- Has it been refinished? A refinish can hide pitting and destroys collector value.
- Why is it being sold?
- Are the original box, papers, and extra magazines or chokes included?
Vague or evasive answers about modifications are the most reliable warning sign you will get.
Buying used without handling it first
Online you cannot do most of the above, so shift the burden to the description: ask for clear photographs of the bore, the crown, the muzzle, the breech face, and any wear. Ask the specific questions above in writing.
Understand the return terms before you buy. At Kazu Arms, products sold “as is” or “used” are final sale — see our returns policy. That is normal in the trade, and it is exactly why the inspection questions matter more on a used gun than a new one. If you are unsure, ask us before you order.
A used firearm still transfers like any other — it ships to a licensed dealer near you, and you complete the background check there. Inspect it at the counter before you finish the paperwork; that is the easiest moment to raise a problem. See how an FFL transfer works.
Common questions
Is a used gun a bad first purchase?
Not inherently, but it adds a variable you cannot yet judge. If you buy used as a first gun, buy from someone who will stand behind it, or bring someone experienced. Our first gun buyer’s guide covers the wider decision.
How many rounds is too many?
There is no single number — it depends entirely on the cartridge, the pressure, and the maintenance. A well-kept .22 or a mild-cartridge bolt gun can run effectively forever. Judge the bore and throat, not the story.
Does a refinish matter?
Mechanically, rarely. For value, enormously — a refinished collectible can lose most of its premium. It can also conceal pitting, so inspect the bore more carefully on a refinished gun.
Should I have a gunsmith look at it?
For anything expensive, anything with modifications, or any revolver you are unsure about — yes. An inspection costs a fraction of a repair, and far less than a gun you cannot safely fire.
Where to start
Check the bore and crown first, work the action, look for cracks and active rust, and ask what has been changed. Everything cosmetic is a negotiating point; everything structural is a reason to walk.
Browse firearms, or see our guides to bolt-action rifles, handguns, and semi-auto shotguns. Not sure about a specific gun? Ask us — we would rather talk you out of a bad one than sell it to you.