The TAPP Shotgun Shell Adapter lets your SRC ZAROS SR4 feed from compact shotgun-shell mags (Cyma Shell, 30 BBs) for the smallest profile.
Spec card
| Type | Shotgun Shell |
|---|---|
| Feeds from | Shotgun shell mags |
| BB capacity | 30 |
| Overall profile | Small |
| Recommended mags | Cyma Shell |
| Best for | Secondary or matching a pistol look |
Compatibility
| Brand / Platform | Compatibility Verification | Tuning & Adjustment Notes |
|---|---|---|
| SRC ZAROS SR4 GBB Series | Direct Native Fit | Direct OEM factory standard. Features an adjustable plunger to calibrate engagement against the internal valve striker pin. Fine-tune gasket height to achieve a tight compression seal against the loading nozzle without causing bolt carrier drag. |
| SRC M4 / AR-15 / SR-4 GBB Platforms (Gen 2 / Gen 3) | Verified Fit (Tuning Recommended) | Shares the proprietary SRC GBB engine architecture. Adjust the plunger depth outward if experiencing light strikes or incomplete valve depression, and fine-tune gasket height to eliminate top-seal gas leaks. |
| WE-Tech / VFC / WA / TM MWS M4 GBBR Lines | NOT Compatible | Third-party M4 GBBR platforms utilize distinct valve knocker depths, different gas router seal profiles, and non-matching magazine catch heights incompatible with SRC-spec receivers. |
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: M4 AEG, VFC M4, KJW M4, KWA/KSC M4, GHK M4/MK18/G5, WE-Tech Open Bolt M4/M16/416/XM177/MK18/MSK/L85/SCAR-L, WA/WOC/GE/KA/Matrix/Inokatsu, G&G MGCR
Want to compare every option? Use the SRC ZAROS SR4 Adapter Builder.
