KSC 40rds Gas Magazine For M4 GBB Airsoft Rifle

KSC 40rds Gas Magazine For M4 GBB Airsoft Rifle Metal Construction Airsoft Gas Magazine 40 Rounds Loading Capacity Work With Green Gas/ Top Gas Best accompanied with Plastic Bullet Loading Too or Speed Loader Suitable for 6mm Plastic Bullet BB Suitable For KSC M4 Series Gas Blow Back GBB Rifle Airsoft Gun Also fit for KWA KR-Series M4 Series Gas Blowback Airsoft Rifles