Used is cheap. Unless it isn't
Firearms are simple machines with few consumable parts, so a well-kept used gun can be as good as new. Everything depends on a ten-minute inspection most buyers never learn.
A used gun is the best value in the market or the most expensive mistake available, and the difference is almost entirely inspection. Firearms are simple machines with few consumable parts, which is why a well-kept used gun can be indistinguishable from new — and why a neglected one hides its problems well enough to survive a counter handshake.
What actually wears out
Steel frames and barrels outlast their owners under normal use. The parts that fail are smaller and cheaper, and nearly all of them are replaceable.
- Springs. Recoil, magazine and hammer springs are consumables. Replacing them on a used gun is routine maintenance, not a repair.
- Extractors and ejectors. The usual culprits behind failures to eject. Cheap parts, but a sign of high round count.
- Barrel throat and rifling. This is the one that matters. Erosion at the throat on a high-volume rifle is the practical end of its accuracy life.
- Finish and fit. Cosmetic unless rust has pitted the metal, in which case it is structural.
- Polymer frames. Effectively do not wear out, but they do show heat damage and solvent damage, which is worth looking for.
The ten-minute inspection
| Check | How | Walk away if |
|---|---|---|
| Bore | Light from the breech, look for sharp lands | Pitting, dark shadow at the throat, bulges |
| Muzzle crown | Look for dings on the rifling at the muzzle | Visible damage — it destroys accuracy |
| Lockup | Close the action, check for wobble | Movement on a revolver cylinder or a break action |
| Timing (revolvers) | Cock slowly, check the bolt drops into each notch | Cylinder does not lock before the hammer falls |
| Rails and slide | Look for peening, galling, bright wear lines | Metal deformation rather than finish wear |
| Screws | Look at the slots | Chewed screws mean amateur work inside |
| Serial numbers | Check they are legible and match paperwork | Altered or obscured markings — that is a legal problem |
Where new wins
Buying new buys you a warranty, a known history, current production tolerances, and — increasingly important — the current generation of features. On platforms where the optic cut, the trigger and the ergonomics have changed generation to generation, a used previous-generation gun is genuinely a different product, not just an older one.
Glock 19 Gen5 9mm
New-buy baselineThe reference point for a used comparison. When a used gun of the same size and capacity is not meaningfully cheaper than a current-generation model with a warranty, the used deal is not a deal. Use a known current model as your price anchor before negotiating on anything second-hand.
Check stock at Ammunition DepotWhere used wins
Three categories are consistently better bought used: revolvers, pump shotguns, and bolt-action rifles. All three are mechanically simple, all three have long service lives, and all three are frequently sold by owners who fired them a handful of times.
Ruger GP100 .357 Mag
Buy-it-for-lifeA heavy-framed .357 is the archetype of a gun worth owning in either condition. New, it is a lifetime purchase. Used, the only checks that matter are timing, the forcing cone and the bore. For a deeper dive on inspecting wheelguns specifically, the revolver specialists at WheelGuns.co cover condition grading and collecting.
Check stock at Ammunition DepotMossberg 500 All Purpose Field
Used-market staplePump shotguns turn up used constantly because they get bought for one season and stored. The action tells you almost everything: cycle it hard a dozen times, check for grit and short-stroking, and look at the magazine tube for rust. Spare barrels are cheap and easy to find, which makes a sound used receiver a genuine bargain.
Check stock at Ammunition DepotBuying used without meeting a stranger
Private sales between individuals are legal in many states but carry real risk on both sides, and several states require the transfer to run through a dealer regardless. Buying used from a dealer, or through a dealer-facilitated transfer, costs a fee and removes the ambiguity. The mechanics are the same as any online purchase — see the FFL transfer guide for the sequence.
Whichever route you take, price against current retail. If a used gun is priced within a small margin of a new one, the warranty alone settles the argument.
FAQ
Do guns wear out?
The frame and barrel usually outlast the owner under normal use. Springs, extractors and ejectors are consumables, and barrel throat erosion is the practical accuracy limit on high-volume rifles.
What should I check first on a used gun?
The bore and the muzzle crown, then lockup and timing. After that, look at the screws: damaged slots mean someone has worked on the gun without the right tools, which is the most common reason to walk away.
Which used guns are the best value?
Revolvers, pump shotguns and bolt-action rifles. All three are mechanically simple, long-lived, and frequently sold barely used.
Is a used polymer pistol risky?
Less than people assume. Polymer frames do not meaningfully wear, though they can show heat or solvent damage. The bigger issue is generation: optic cuts, triggers and ergonomics change between generations, so an older gun is a different product rather than just an older one.
Can I buy a used gun online?
Yes, and it transfers through a licensed dealer exactly as a new gun does. Dealer-facilitated purchases avoid the ambiguity of a private sale, and several states require a dealer transfer for private sales anyway.
Shopping for this?
Price any used gun against a current-production equivalent. If the gap is small, the warranty settles it.
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