Is this the one you're talking about?
I'll have to check with my local army surplus store if they have it in stock. Although this one looks like it was for straight mags instead of the slightly bent AK mags, I hope I'll be able to close the lid part to cover my magazine until its needed.
Unforunately my army surplus store usually ask outrageous prices for their items which kinda defeats the purpose of "surplus" haha. (I go to the AAA Army Surplus store in Kensington market in Toronto for anyone who is familiar. Don't buy from them unless as a last resort!!)