The TAPP M4 Adapter lets your Umarex/KWA Beretta PMX run standard AEG M4/M16 magazines: cheap, light and everywhere.
Spec card
| Type | M4 |
|---|---|
| Feeds from | Standard AEG M4/M16 mags |
| BB capacity | 30-250+ |
| Overall profile | Medium |
| Recommended mags | PTS EPM1 or similar high-power mid-cap |
| Best for | Competitive play |
Compatibility
| Brand / Platform | Compatibility Verification | Tuning & Adjustment Notes |
|---|---|---|
| Umarex / KWA Beretta PMX GBB SMG Series | Direct Native Fit | Direct OEM factory standard for the KWA-manufactured Umarex Beretta PMX SMG platform (System7 / NS2 engine architecture). Fine-tune the adjustable gasket height to establish an airtight compression seal against the bolt nozzle assembly, ensuring maximum gas efficiency and rapid cycling without creating friction against the reciprocating bolt mechanism. |
| KWA MP9 / KWA MP7 / VFC & TM SMG Lines | NOT Compatible | KWA MP9/MP7 platforms and third-party SMG models (VFC, Tokyo Marui) utilize distinct magazine shell dimensions, non-matching valve striker heights, and proprietary gas router profiles incompatible with KWA PMX 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: KWA MP9/VMP-1, VORSK VMP2, Maruyama SCW-9
Want to compare every option? Use the Umarex/KWA Beretta PMX Adapter Builder.
