The TAPP Green Gas Drum is a 400-round green gas drum (AW Custom) for your WE Bulldog/PX4 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 |
|---|---|---|
| WE-Tech Bulldog / PX4 Compact GBB Pistol Series | Direct Native Fit | Direct OEM factory standard for the WE-Tech Bulldog (PX4 Compact) gas blowback series. 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. |
| Tokyo Marui PX4 / HK3P Full-Size PX4 & Third-Party Pistol Lines | NOT Compatible | Tokyo Marui PX4 models and full-size WE PX4 variants utilize longer magazine bodies, different magazine retention catch placements, and distinct gas router height specifications incompatible with the compact WE Bulldog magwell 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
Want to compare every option? Use the WE Bulldog/PX4 Adapter Builder.
