The TAPP Green Gas Drum is a 400-round green gas drum (AW Custom) for your EMG FN 509 that bolts on with no HPA setup.
Spec card
| Type | Green Gas Drum |
|---|---|
| Feeds from | Green gas (GBB) drum |
| BB capacity | 400 |
| Overall profile | Large |
| Recommended mags | AW Custom |
| Best for | Plug and play, no HPA setup needed |
Color options
- Black: 400-round AW Custom green gas drum in black
- Red: 400-round AW Custom green gas drum in red
- Green: 400-round AW Custom green gas drum in green
- Green/Black: 400-round AW Custom green gas drum in green/black
- AW Adapter Only: adapter only, for an AW green gas drum you already own
Compatibility
| Brand / Platform | Compatibility Verification | Tuning & Adjustment Notes |
|---|---|---|
| EMG / Cybergun FN 509 Tactical GBB Series | Direct Native Fit | Direct OEM factory standard for the EMG / Cybergun FN 509 GBB platform. Fine-tune the adjustable gasket height to establish an airtight compression seal against the loading nozzle seal, ensuring maximum gas efficiency and smooth recoil recovery without creating drag on the returning slide assembly. |
| EMG FNX-45 / Tokyo Marui / WE-Tech / VFC Pistol Lines | NOT Compatible | Full-size FNX-45 platforms, standard G-series, and third-party pistol models utilize distinct magwell frame dimensions, non-matching valve striker heights, and proprietary gas router profiles incompatible with FN 509 architecture. |
What's in the box and how to install
- Plug and play: no pulling valves or feed lips from stock mags.
- Materials: standard body is Nylon PA12. Carbon Fiber is available (3x stiffness, up to 38% higher tensile strength than Nylon 12).
- Made in the USA by TAPP Airsoft.
- Install: insert with the bolt or slide locked back.
- Warranty: 30-Day Warranty + Lifetime Support.
More options
Also available for: TM FNX-45, VFC/Cybergun FNX-45, TM FN57
Want to compare every option? Use the EMG FN 509 Adapter Builder.
