In this guide
- Start here: what is your gun actually doing?
- 1. A flat or weak battery
- 2. A loose connector, blown fuse or damaged wiring
- 3. A barrel jam
- 4. The magazine is not feeding
- 5. The hop-up is turned up too far
- 6. A motor problem
- 7. A gearbox fault
- When to stop and get it serviced
- Frequently asked questions
Few things kill a game day faster than pulling the trigger and getting nothing. The good news: most of the time an airsoft gun that will not fire has a simple, fixable cause, and you can sort it yourself in a few minutes. The rest of the time it is a job for the workbench, and knowing the difference saves you money and stops a small problem becoming an expensive one.
After nearly 20 years fixing airsoft guns in our Rochester workshop, these are the seven faults we see again and again, in the order worth checking them. We will focus on electric guns (AEGs), since they are the most common, with notes for gas and spring where it helps.
Start here: what is your gun actually doing?
Before you strip anything, listen. The sound your gun makes when you pull the trigger tells you where to look:
- Total silence, no click, no whir: almost always electrical, a battery or connection (faults 1 and 2).
- Motor whirs or cycles but no BBs come out: a feeding or barrel problem (faults 3, 4 and 5).
- A single loud crack or clunk, then nothing: stop. That is usually a gearbox fault (fault 7). Firing again can turn a cheap fix into a costly one.
- Rapid clicking: the battery cannot turn the motor over, or the motor or gearbox is binding (faults 1, 6 and 7).
1. A flat or weak battery
It sounds obvious, but a tired battery is the single most common reason an AEG will not fire, or fires slowly then stops. LiPo and NiMH packs lose charge sitting in a bag between games, and an old pack that no longer holds charge behaves exactly like a dead one.
- Charge the battery fully on the correct charger and try again.
- If you have a spare known-good pack, swap it in. If the gun fires, the battery was the culprit.
- Store LiPos at storage charge, not empty or full, to make them last. Our airsoft battery guide covers picking and caring for packs.
2. A loose connector, blown fuse or damaged wiring
If the battery is charged but the gun is still silent, the power is not reaching the motor. This is the next thing we check on the bench, and it is often something small.
- Connectors: unplug and firmly reseat the battery. Worn mini-Tamiya connectors are a classic weak point; a loose or corroded connector will cut power intermittently.
- Fuse: many AEGs have an inline fuse. A blown fuse gives you total silence. Replace it with the same rating, and if it blows again, that points to a short or a stalled gearbox, so do not just keep fitting fuses.
- Wiring: look for pinched, melted or disconnected wires, especially near the stock tube and trigger. After a new battery install, double-check the polarity is not reversed.
3. A barrel jam
If the motor cycles but you get a muffled thud instead of a crisp shot, a BB is likely stuck in the inner barrel. Keep firing and you can stack more BBs behind it, so stop straight away.
- Remove the magazine and the battery.
- Push an unjamming or cleaning rod down the barrel from the muzzle to clear the stuck BB.
- Barrel jams are usually caused by cheap, low-quality or reused BBs. Good-quality, correctly weighted BBs prevent most of them.
4. The magazine is not feeding
If the gun sounds healthy but no BBs come out, and the barrel is clear, the magazine is not delivering. Feeding faults are common and easy to rule out.
- Make sure the magazine is fully seated and clicked home.
- On a hi-cap, wind the wheel until you hear BBs feed to the top. A hi-cap that is not wound will not feed.
- Try a different magazine. If the second one feeds, the first mag is the problem, not the gun.
- Old or dirty mags can stick; a clean mag feeds reliably.
5. The hop-up is turned up too far
An over-applied hop-up can grip the BB so hard it will not leave the barrel, or sends it wildly off. If your gun cycles and feeds but BBs barely dribble out, check the hop.
Wind the hop-up unit off completely, then re-set it a little at a time until a 0.20g to 0.25g BB flies flat and level. A tiny adjustment makes a big difference.
6. A motor problem
If you get a rapid click or a weak, laboured cycle with a good battery, the motor may be the issue. Motor height, worn brushes or a poor connection all cause it.
- Check the motor height adjustment screw in the grip; too low and the motor cannot turn the gears, too high and it stalls.
- Make sure the motor tabs and wiring are clean and connected.
- Worn brushes or a dying motor need replacing. This is a straightforward job, but it is where a lot of DIY fixes stop and the workbench begins.
7. A gearbox fault
This is the one to take seriously. If you heard a loud crack and the gun died, or the trigger is locked solid, or it made a horrible grinding noise, the fault is inside the gearbox and you should stop firing it.
Common gearbox failures include a stripped piston, broken or stripped gear teeth, a failed anti-reversal latch, or a broken spring guide. Continuing to pull the trigger with a broken gearbox can shear more parts and turn a single cheap component into a full rebuild.
Opening a gearbox correctly, under spring tension, without launching parts across the room or damaging the shimming, takes the right tools and experience. This is exactly what our in-house repair workshop in Kent is for. Bring the gun in, tell us what happened, and we will diagnose it properly.
When to stop and get it serviced
Work through faults 1 to 5 yourself; they are quick and safe. Once you are into the motor and gearbox, or if the gun is under warranty, it is usually worth letting a technician take over. We service and repair airsoft guns of every brand from our Rochester showroom, from a quick diagnosis to a full gearbox rebuild, and regular servicing (covered in our airsoft gun maintenance guide) prevents most of these faults in the first place.
Occasionally a gun has simply had its day and a rebuild costs more than it is worth. If you get to that point, our pick of the best airsoft guns for 2026 covers reliable replacements at every price, and the best budget airsoft guns hold up on site for a lot less than a full gearbox rebuild.
If it is a single part that has gone rather than the whole gun, it is worth checking the airsoft boneyard first. Tappet plates, nozzles, cylinder heads and motors all turn up there for a pound or two, which is usually cheaper than the postage on a new one.
Frequently asked questions
Why does my airsoft gun click but not fire?
A rapid click almost always means the battery cannot turn the motor over, either because it is low on charge or because the motor or gearbox is binding. Charge or swap the battery first; if it still clicks with a good battery, the motor or gearbox needs looking at.
My airsoft gun makes noise but no BBs come out. Why?
The gun is cycling but not delivering BBs. Check for a barrel jam, make sure the magazine is seated and wound, and back the hop-up off. One of those three is the cause the vast majority of the time.
Is dry firing bad for an airsoft gun?
Repeatedly dry firing an AEG at full power puts extra stress on the piston and gears with no BB to cushion the cycle, and over time it can wear or crack parts. The odd dry shot to clear a mag is fine; making a habit of it is not.
Do airsoft guns just wear out?
Like anything mechanical, they need care. Neglected guns eventually fail and need repairs; a serviced gun lasts for years. Basic upkeep and the occasional workshop service keep an AEG running reliably.
