The ad for the mags is in the April 10th, 2008 "Shotgun News", second page.
Add information:
Allied Armament
50 round .308 Drum Mag
Retail price w/out mag pouch $225.00
Retail price with mag pouch $255.00
Dealer pricing availible
Currently availible for the G3
Coming Soon:
December: FNFAL
January: M1A/M14
Febuary: AR10
March: Galil and Saiga .308
Allied Armament Home Page