Prometheus G&G ARP9 6.03mm EG 128mm Barrel

Prometheus G&G ARP9 6.03mm EG 128mm AEG Barrel. Specifically made to fit the G&G ARP9 AEG gun, it's a perfect fit and size. Customize your gun to make it the ultimate CQB airsoft gun. The EG series is a 6.03mm inner barrel diameter. May increase your FPS and accuracy after installation. One of the most popular and best made barrels for airsoft. Made in Japan.