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A Small Part That Stops The Gun

The air nozzle sits at the front of the cylinder head and does two jobs on every shot: it seals against the hop rubber so the air goes behind the BB rather than around it, and it pushes the next BB forward into the chamber. It does that thousands of times a day and it is made to be a wear item.

The Symptoms

A worn or cracked nozzle shows up as misfeeds, double feeds, BBs rolling out of the barrel, or a sudden drop in range that no amount of hop adjustment fixes. People often chase this through the magazine and the hop rubber first. If you have a gun that has done a lot of rounds and has started feeding badly, look here.

⚠️ Get The Length Right

Nozzle length is not a detail, it is the whole thing. A nozzle a millimetre too short or too long will feed badly no matter how good the rest of the gun is, and lengths differ between platforms and sometimes between manufacturers of the same platform. ASG do not publish a length for this part, so measure the one you are replacing, or bring the gun to us.

Fitting

Not sure whether this is the right part for your gun, or would rather someone else fitted it? Our Rochester workshop services and upgrades AEGs in house, and we would rather check compatibility with you first than have you order twice.

General
BrandASG
Other
TypeAir nozzle
FitsM16A2 and M4A1 pattern airsoft AEGs

Frequently asked questions

What does the air nozzle do?

Two things on every shot: it seals against the hop rubber so air goes behind the BB, and it chambers the next BB. It is a wear part by design.

How do I know mine is worn?

Misfeeds, double feeds, BBs rolling out of the barrel, or range dropping off with no hop adjustment fixing it. Cracks around the o-ring seat are the visible sign.

Does nozzle length matter?

Enormously. A millimetre out either way causes feeding problems that nothing else will fix. Measure the nozzle you are taking out, or let us check it.

Will it fit my M4?

It is specified for M16A2 and M4A1 pattern AEGs, but because length is so critical we would rather compare it against your existing nozzle before you fit it.