Fill nozzle moved up to enhance the realistic look.
Umarex G3A1 GBB airsoft rifle (by VFC).
The Umarex G3A3 20 round gas magazine is designed to work as a realistic magazine for the fully licensed Umarex H&K G3A3 GBBR. The magazine sports full aluminum construction and features the ability to allow your gun to dry fire.
x1 Umarex G3A3 20rds Gas Magazine (by VFC)