Tokyo Marui 20rds Gas Magazine for Marui Type 89 GBB Rifle

Tokyo Marui 20rds Gas Magazine for Marui Type 89 GBB Rifle 20 Rounds Loading Capacity Magazine Works with both Green Gas & HFC 134a Gas Suitable for Tokyo Marui Type 89/ Type89 Folding Stock Series Airsoft Gas Blow Back GBB Rifle (Compatible with Type 89 J.G.S.D.F)