GHK 40rds GMAG Gas Magazine for GHK G5/ M4 GBB Airsoft Guns (TAN)

GHK 40rds GMAG Gas Magazine for GHK G5/ M4 GBB Airsoft Guns (TAN) Polymer Housing With Metal Internal Parts Magazine GMAG Style Airsoft Magazine 40 Rounds Loading Capacity Magazine Suitable For GHK G5/ M4 GBB Airsoft Guns Work With Top Gas/ Green Gas Best accompanied with Plastic Bullet Loading Too or Speed Loader Suitable for 6mm Plastic Bullet BB