FPS Softair Aluminium Air Nozzle with Inner O-Ring for M4/M16

Code: SPM4E
  • Increase power and efficiency
  • CNC Ergal construction
  • For M4/M16, version 2 gearboxes

Increase your electric M4/M16s power and air efficiency with an upgrade nozzle and O-ring. With its CNC Aluminium Ergal construction with smooth anodized finish, this will make a grade enhancement over your stock nozzle to used with version 2 gearboxes.

Make sure to use pure silicone oil to lubricate your cylinder head's nozzle stem before installing this nozzle.

Full description



  • Increase power and efficiency
  • CNC Aluminium Ergal construction
  • For M4/M16, version 2 gearboxes
  • Length: 21.2 mm
  • Inner hole diameter: 5.43 mm

Package Includes

  • FPS Softair Aluminium Air Nozzle with Inner O-Ring for M4/M16



Internal Part Type
Nozzle, O-Ring,
Patrol Base - Warning Icon
Patrol Base - Warning Icon
Parts Fitting


Colour Wheel Greyscale
Item Colour
Internal Part Construction
Polymer, Rubber,

Part Specific

Electric Part Specific

Gearbox Icon
Gearbox Version
V2 Gearbox
Gearbox Version Compatibility Variant
Version 2

Size guide

Parts Fitting

Upgrades and Downgrades should only be undertaken by experienced players, or Airsoft Technicians. Please note, changing any internal parts of a weapon voids its warranty unless done in-house by our staff. 

Please ensure that when fitting parts the part purchased is the correct part, as once a part has been fitted we cannot accept return.

We do know that players love to tinker, so we're here to give you help should you require it, and if needed you can get in touch with our workshop for more help!

Unique Parts

Please note that some parts may be unique to a specific brand of weapon. For example: Parts for an ASG M4A1 may not fit an ICS M4A1.

Parts from the same brand typically have a high chance of fitting, though be warned, some replicas use unique parts, so please ensure the part will fit before you attempt to fit it.

If you require help with fitting any parts feel free to get in touch with us via our Contact Us Page.