The TAPP Drum Adapter puts a 400-2,500+ round drum on your TM MWS/89/MK18/ZET 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 |
|---|---|---|
| Tokyo Marui M4A1 MWS / ZET System GBBR Series | Direct Native Fit | Direct OEM factory standard for TM's proprietary ZET System AR-15 blowback architecture. Features an adjustable plunger to calibrate engagement depth against the spring-loaded valve knocker pin. Fine-tune gasket height to maintain an airtight compression fit against the MWS nozzle seal without causing bolt carrier drag. |
| Tokyo Marui Type 89 / MK18 Mod 1 GBBR Series | Verified Fit (Shared ZET Engine Architecture) | Utilizes the same internal TM ZET System valve geometry and receiver magwell dimensions. Adjust plunger set screw depth and gasket elevation to ensure smooth cycling and consistent gas output. |
| VFC / GHK / WE-Tech M4 GBBR Series | NOT Compatible | Third-party M4 GBBR platforms utilize distinct valve knocker angles, striker travel distances, and magazine catch heights that are incompatible with TM MWS specs. |
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: Toxicant XM5, EMG-DE PCC
Want to compare every option? Use the TM MWS/89/MK18/ZET Adapter Builder.
