Another drum magazine for real steel guns reviewed by The Firearm Blog and it is the Magpul PMAG D-60 AR/M4 Drum Magazine. If you want something like this for airsoft, the closest thing in terms of looks is the Angel Custom 1500 round drum magazine for M4 AEGs... "In this episode of TFBTV, James tests out Magpul's new D60 drum on the FN M4 rifle. Magpul launched this drum after much fanfare and promises utter reliability and great usability. James puts these claims to the test as he runs through the function of the D60, along with a 60rd drum dump to make sure everything works as advertised. Also, James answers the question: 'Is this drum worth $125?'"