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Airsoft AEG Nozzles

The air nozzle sits at the front of your AEG's gearbox and pushes each BB into the hop-up, then seals against the bucking as the gun fires. A worn nozzle, or one that's the wrong length, causes double-feeding, poor range and inconsistent shots.

Find the right nozzle length for your M4, AK, MP5, AUG, Scorpion Evo or Tokyo Marui Next Gen with our airsoft AEG nozzles from EPES, MAXX Model, FPS Softair, Rocket and ZCI.
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Frequently Asked Questions

Need To know more?

What nozzle length do I need?

It depends on your gun. Many M4 AEGs use 21.4mm, but other platforms and custom builds differ. Measure your old nozzle or check your gun's specification before ordering.

What happens if my nozzle is the wrong length?

Too short can cause double-feeding and air loss. Too long can cause jams and stop BBs feeding. Both reduce range and consistency.

Is an aluminium nozzle better than polymer?

Aluminium is tougher, while polymer and Delrin are lighter, which helps high rate-of-fire builds. The O-ring seal matters as much as the material.

Can you fit a nozzle for me?

Yes. Fitting needs the gearbox opening, so our in-house tech team can do it for you. Get in touch to arrange it.

Choosing the Right AEG Nozzle Length

Nozzle length is the most important thing to get right. Each AEG platform uses a set length, and even half a millimetre can affect how cleanly the BB feeds and how well the nozzle seals. As a guide, most M4 and M16 AEGs use a 21.4mm nozzle, but different gearboxes, cylinder heads and hop units can change this, so always measure your existing nozzle or check your gun's specification first.

Common choices include the Rocket M4 21.4mm nozzle, ZCI CNC M4 nozzle and FPS Delrin M4 nozzle. For other platforms, we stock the ZCI AUG nozzle, MAXX Scorpion Evo nozzle and FPS nozzles for Tokyo Marui Next Gen M4 and MP5.

EPES Double O-Ring Nozzles

EPES makes CNC duralumin nozzles with two O-rings and a PTFE finish in a wide range of lengths, so you can match your gun precisely. The double O-ring improves the seal between the cylinder head and nozzle, helping consistency. Browse the full EPES range.

Adjustable Nozzles

Not sure of the exact length, or tuning a custom build? An adjustable nozzle, such as the MAXX Model adjustable air nozzle (19–22mm), lets you fine-tune the length to fix feeding problems and get the best air seal.

Nozzle Material

Polymer and Delrin nozzles are light and quiet, while aluminium nozzles are tougher and resist wear. A lighter nozzle is often preferred for high rate-of-fire builds, while aluminium suits higher-power setups. Either way, a good internal O-ring is key to a strong air seal.

Upgrading Your Air Seal

The nozzle is one part of your AEG's air seal. For the best results, pair it with a matching cylinder head, piston head and hop-up bucking. You may also need a new tappet plate, which moves the nozzle back and forth. For gas rifles, see our GBBR nozzles, and for pistols, pistol loading nozzles.

Fitting a nozzle means opening the gearbox. If you'd rather leave it to us, our in-house tech team can help: get in touch.
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