I have the stock mag that comes with the A&K Mk 46 of course, but I'm getting a bit annoyed at how bulky it is (although it only holds 500 more rounds than the smaller CA boxes), and it is driving me just crazy enough to start asking around. I've looked and can't seem to find the CA box mags in stock anywhere and I'm wondering if anybody else uses a 249, 240B, or M60 and has any ideas for ammunition storage on those platforms.