and for a small helping hand, if you need more, WGC sells Star AK mags like that one in 70rnd, 160rnd, and 400rnd versions, and the best part is, the 160rnd ones don't have to be winded, they are regular mags.
www.wargameclub.com (go to the magazine section, then to Star AEG mags, they are about half way down the page)