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RetroArms CNC adjustable nozzle 19.5–22 mm is a practical test nozzle for determining the correct nozzle length in an AEG gearbox. It is made of 2 parts joined by a fine thread, allowing its length to be adjusted within a range of 19.5–22 mm. The body is made of EN AW 2007 duralumin using precision CNC turning, and the sealing O-ring is pre-installed from the factory.

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SPARMS439
Specna Arms silicone grease in a practical 50g package is an essential service lubricant for airsoft gun maintenance. It is particularly suitable for O-rings, seals, AEG pneumatic systems, GBB valves and HPA systems. It helps reduce friction, protects sealing components from drying out and extends their service life.
SPARMS444
Specna Arms silicone oil spray with a volume of 150 ml is a universal maintenance product for airsoft guns. The low-viscosity silicone oil easily reaches O-rings, seals, valves and moving parts, reduces friction and helps protect rubber and plastic components against drying out and ageing.
RetroArms CNC adjustable nozzle makes it easy to find the correct nozzle length for a specific gearbox, hop-up chamber and magazine setup. The fine thread between the two parts allows the length to be adjusted within a range of 19.5–22 mm. For testing, it is recommended to secure the thread with a paint marker, which limits the nozzle from turning on its own during firing while still allowing further adjustment. Once the correct length has been determined, the nozzle can also be prepared for permanent use by securing the thread with threadlocker.
The nozzle length can be continuously adjusted using the fine thread within a range of 19.5–22 mm.
The nozzle serves as a test component when tuning an AEG setup and helps determine the suitable length for a specific replica.
Both parts of the nozzle are made of EN AW 2007 duralumin using precision CNC turning.
The sealing O-ring is pre-installed in the nozzle at the factory. It must be lubricated before use.
Once the correct length has been found, the thread can be secured with super glue and the nozzle can be used as a permanently adjusted component.
For testing, we recommend securing the adjusted length with a paint marker. This helps prevent unwanted nozzle rotation during firing while the connection can still be adjusted after the marker has dried. Once the correct length has been determined, the thread must be secured with threadlocker for permanent use. Always lubricate the sealing O-ring before using the nozzle. We recommend using the adjustable nozzle primarily to verify the ideal nozzle length for your setup and then purchasing the required length in a single-piece version.
| Variants | 19,5-22 mm |
| Color | Silver |
| Nozzle | Metal |