The TAPP Green Gas Drum is a 400-round green gas drum (AW Custom) for your VFC / Umarex G36 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 |
|---|---|---|
| VFC / Umarex HK G36 GBB Series (G36C / G36K / G36V / Gen 1 & Gen 2) | Direct Native Fit | Direct OEM factory standard. Features an adjustable plunger to calibrate engagement depth against the internal valve knocker pin. Fine-tune gasket height to achieve an airtight compression seal against the G36 nozzle seal without causing bolt carrier drag. |
| WE-Tech 999 / G36 (G39 / IDZ) & Clone GBB Series | NOT Compatible | WE-Tech G36 platforms and their clones (Army Armament, WELL) utilize proprietary magazine well dimensions, different valve knocker strike angles, and distinct gas router profiles that do not align with VFC 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: WE G36/G39
Want to compare every option? Use the VFC / Umarex G36 Adapter Builder.
