Guns modify Upgraded magazine for Marui Gen3/4 G-series

- Full Metal body shell 
- 25rds Capacity 
- Stainless Injet Core and High Flow Out Put Valve
- Enhanced Magazine Lip / Std or +0.05 Gas Buck 
- Enhanced Realistic Mag Pad
- Compatible in TM Gen3/4 G-series ( 17/18/34 )