EMG (Double Eagle) 20 Rds Gas Magazine For FN Herstal Licensed FN 509 GBB Airsoft Pistol

Key Feature Metal Construction Airsoft Magazine With Polymer Magazine Base (Engraved "FN" Marking) Manufacturer by Double Eagle 20 Rounds Loading Capacity Magazine For 6mm Plastic Bullet only Designed To Work With Green Gas & Top Gas Best accompanied with Plastic Bullet Loading Too or Speed Loader Suitable For EMG FN Herstal Licensed FN 509 Gas Blow Back GBB Airsoft Pistol