The EPES CNC Duralumin H+PTFE Double O Ring Nozzle is a precision replacement part for AEG gearboxes that demand durability and consistent performance. Engineered with CNC machining and aerospace-grade materials, this 21.1mm nozzle is built to withstand extended use and maintain air seal integrity across thousands of rounds.
Key Features
- Double O ring design – superior air seal and reduced blowback
- CNC-machined duralumin construction – exceptional durability versus plastic
- H+PTFE coating – reduced friction and extended component lifespan
- 21.1mm calibre compatibility – fits most standard AEG gearbox cylinders
- Premium upgrade component – ideal for performance builds and tuned systems
Real-World Use Cases
This nozzle excels in high-round-count scenarios: woodland skirmishes, site-based play, and milsim events where reliability is non-negotiable. Upgraders replacing worn plastic nozzles will notice tighter air sealing, improved consistency, and reduced wear on adjacent parts. Competition shooters and tuned build owners benefit most from the dual O ring seal and reduced internal friction.
Technical Specifications
- Material: CNC-machined duralumin with H+PTFE coating
- Calibre: 21.1mm
- O ring configuration: Double O ring
- Compatibility: Standard AEG gearbox (V2, V3 variants)
Compatibility & Upgrades
This nozzle is compatible with most Version 2 and Version 3 AEG gearboxes. Pair with quality cylinder heads, air nozzles, and air seal upgrades for maximum performance gains. Ensure correct measurement before installation; compatibility varies by gearbox type.
UK Legal & Site Notes
As an internal upgrade component, this nozzle carries no legal restrictions in the UK and is site-agnostic. It does not affect FPS output but improves consistency and longevity, supporting reliable performance across all UK airsoft venues.
Ready to upgrade your AEG’s air seal? Order the EPES CNC Duralumin Double O Ring Nozzle today and experience premium durability and consistency.









