The TAPP Green Gas Drum is a 400-round green gas drum (AW Custom) for your VFC G3/PSG1 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 G3 / G3A3 GBB Series | Direct Native Fit | Direct OEM factory standard for VFC 7.62-pattern receivers. Features an adjustable plunger to calibrate engagement against the internal valve striker pin. Fine-tune gasket height to achieve a tight compression seal against the loading nozzle without causing bolt carrier drag. |
| VFC PSG-1 GBB Series | Verified Fit (Minor Adjustment) | Shares the core VFC G3 internal gas architecture. Fine-tune the plunger set screw depth to guarantee full valve depression by the striker, and adjust gasket height to eliminate top-seal air gaps against the bolt carrier. |
| VFC HK53 / HK33 / MP5 GBB Series | NOT Compatible | HK53, HK33, and MP5 platforms utilize narrower 5.56/.223 and 9mm magwell dimensions, different magazine catch lockups, and distinct gas router profiles that will not accept this 7.62-pattern adapter. |
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: VFC HK53
Want to compare every option? Use the VFC G3/PSG1 Adapter Builder.
