FCW x GE 8872 BK K2 M870 Tactical Gas 3/6 Shot Pump Action Shotgun 
 
Gas powered pump action shotgun based on TM System
Support 134a gas and Green gas
Gas Tank be built inside Fixed Stock
Selective 3 shot / 6 shot fire system
Mainly be made by Metal
Each shell magazine can hold 30rds BB (Compatible with TM And Cyma Gas / Air cocking shotgun series)