The TAPP M4 Adapter lets your M870 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 |
|---|---|---|
| M870 | Direct Native Fit | Purpose-built for the M870 magazine well and feed geometry. |
| Tokyo Marui M870 | Direct Native Fit | Same M870 magazine well and feed geometry. |
| Tokyo Marui M870 Breacher | Direct Native Fit | Same M870 magazine well and feed geometry. |
| Golden Eagle M870 | Direct Native Fit | Same M870 magazine well and feed geometry. |
| Secutor M870 | Direct Native Fit | Same M870 magazine well and feed geometry. |
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: CA 870
Want to compare every option? Use the M870 Adapter Builder.
