The TAPP Drum Adapter puts a 400-2,500+ round drum on your KWA MP9/VMP-1 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 |
|---|---|---|
| KWA / KSC MP9 & TP9, VORSK VMP-1 GBB SMG Series | Direct Native Fit | Direct OEM factory standard for KWA / KSC MP9 and TP9 platforms, as well as the VORSK VMP-1 series (which utilizes KWA MP9-system magazine architecture). Fine-tune the adjustable gasket height to establish an airtight compression seal against the bolt carrier nozzle assembly, ensuring maximum gas efficiency and sustained high rates of fire without creating friction against the reciprocating bolt mechanism. |
| Maruyama SCW-9 (MP9-style magazine well) | Direct Native Fit (Shared KWA MP9 Magazine) | The MP9-style SCW-9 lower is built around the KWA MP9-system magazine, so this adapter also installs and seals in that configuration. |
| Maruyama SCW-9 (native) / MPIX / TP9 / Maruyama MP9 | NOT Compatible | These use Maruyama's own native SCW-9 magazine well — the Maruyama MP9 is a different gun to the KWA/KSC MP9 despite the shared name. Use our Maruyama SCW-9 adapter for those. The GSeries / Glock-style SCW-9 is a third magazine well again — use our Maruyama SCW-9 (GSeries) adapter. |
| KWA MP7 / KWA PMX / VFC & TM SMG Lines | NOT Compatible | KWA MP7, KWA PMX, and third-party SMG platforms (VFC, Tokyo Marui) feature entirely different magazine casing profiles, retention notch placements, valve striker locations, and proprietary gas router geometry incompatible with KWA MP9 / VORSK VMP-1 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. 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: VORSK VMP2, Maruyama SCW-9, Umarex/KWA Beretta PMX
Want to compare every option? Use the KWA MP9/VMP-1 Adapter Builder.
