How about showing off some MKA magazines?
I just got some new magazines for my MKA 1919 (see pictures below). I've got the OEM 5-round, Salem6 10-round, OEM 10-round, Firebird F15 15-round, and Roulette Tactical 18-round. I haven't had a chance to test the last two (I recently received them), but I'll try to make a video as soon as I do.
I placed a 30-round AK47 magazine and 15-round .40 pistol magazine on both sides so that you could see the relative size of the magazines.