The TAPP Green Gas Drum is a 400-round green gas drum (AW Custom) for your WELLPRO PPK-20 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 |
|---|---|---|
| Wellpro PPK-20 / AK-12 GBB Series | Direct Native Fit | Direct OEM factory standard for Wellpro PPK-20 and AK-12 gas blowback platforms (which utilize Wellpro's proprietary GBB system architecture). Fine-tune the adjustable gasket height to establish an airtight compression seal against the bolt carrier nozzle assembly, ensuring maximum gas efficiency and smooth cycling without creating friction against the reciprocating bolt mechanism. |
| GHK / WE-Tech / VFC / LCT / Marui AK-pattern GBB Platforms | NOT Compatible | Third-party AK/PPK GBB systems (GHK AK series, WE AK, VFC AK/PPK, Tokyo Marui AKM/AKX) feature entirely different magazine body locking lug profiles, feed lips, valve striker heights, and proprietary gas router seal geometry incompatible with Wellpro PPK-20 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: Umarex/VFC Walther PPQ M2
Want to compare every option? Use the WELLPRO PPK-20 Adapter Builder.
