The TAPP Drum Adapter puts a 400-2,500+ round drum on your MARUZEN MP5 for suppressive fire.
Spec card
| Type | Drum |
|---|---|
| Feeds from | Drum magazine (pre-installed) |
| BB capacity | 400-2,500+ |
| Overall profile | Medium to Large |
| Recommended mags | Tokyo Marui or Angel Custom drum |
| Best for | Suppressive fire and general skirmishes |
Drum options
- 400rd Mini: 400-round mini drum
- 1500rd Flash: 1,500-round flash drum
- 1500rd Electric: 1,500-round electric drum
- 1500rd Electric Tan: 1,500-round electric drum in tan
- 2000rd Flash: 2,000-round flash drum
- 2000rd Electric: 2,000-round electric drum
- 1200rd Twin: 1,200-round twin drum
- Adapter Only – Angel Custom: adapter only, for an Angel Custom drum you already own
- Adapter Only – TM Mini: adapter only, for a Tokyo Marui mini drum you already own
- Adapter Only – TM Twin: adapter only, for a Tokyo Marui twin drum you already own
- Adapter Only – A&K: adapter only, for an A&K drum you already own
- Adapter Only – ICS: adapter only, for an ICS drum you already own
Compatibility
| Brand / Platform | Compatibility Verification | Tuning & Adjustment Notes |
|---|---|---|
| Maruzen MP5K / Charger GBB Series | Direct Native Fit | Direct OEM factory standard. Fine-tune the gasket height flush to the loading nozzle to ensure optimal compression seal and gas pressure retention during high-rate-of-fire full-auto bursts without causing bolt drag. |
| WELL G55 MP5K GBB Series | Verified Fit (Minor Adjustment) | Direct structural clone of the Maruzen system. Due to body casing and magazine catch tolerances on budget clone receivers, fine-tune gasket height to eliminate top-seal air gaps against the feed nozzle. |
| WE-Tech Apache / VFC / TM MP5 GBB Series | NOT Compatible | Modern WE Apache, VFC, and TM MP5 GBB platforms utilize proprietary trigger box geometry, distinct output valve locations, and different gas router seal profiles that do not align with legacy Maruzen-spec magwells. |
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. US-spec Foster fitting included, never exceed 150 PSI, use a secondary low-pressure regulator.
- Warranty: 30-Day Warranty + Lifetime Support.
More options
Also available for: MP5 AEG, VFC MP5, WE MP5 Apache
Want to compare every option? Use the MARUZEN MP5 Adapter Builder.
