Works great on EMG Space Invader gun. Feeds flawlessly on semi and full auto. Made out of carbon fiber ABS. Made for Angel Customs Firestorm drum. ♦️IMPORTANT♦️: You are only buying adapter to fit on the drum. Not the drum or the gun. If you are interested in anything else 3d printed send me a message. I think I am the only person on Hopup offering carbon fiber polycarbonate 3d prints. Have a print job that needs true durability? Contact me today or visit my website/ e-shop to learn more. https://www.cedar3d.com/