Ma.K. began life as SF3D, the creation of artist Kow Yokoyama as a kind of photo comic (sounds familiar, no?) back in the 1980's in the pages of HobbyJAPAN. SF3D's story was set about 900 years in the future...there was a nuclear war, Earth rendered uninhabitable, humanity moves to space, Earth restores itself...pretty standard fare. The story was enhanced by pictures of kit bashes by Kow, drawing inspiration from WWI and WWII German aircraft and armor. The result was something very different from the "super robot" stuff in vogue in Japan at the time.
There were some licensed Ma.K. model kits during the story's run but there was a dispute between Kow and HobbyJAPAN in the mid-80's, and as a result HobbyJAPAN ended up dropping SF3D. The dispute wasn't resolved until the 1990's, and this is when Kow began releasing products from his story reintroduced as Maschinen Krieger ZbV 3000. Since Ma.K. was not overly popular, there have been relatively few "affordable" options for collectors, at least until recently. As a result, while I have been a fan of Ma.K. for close to 15 years, it was just a few months ago I decided to add anything Ma.K. to my collection.
There are TONS of vehicles and armor and bits of weapons to admire from Ma.K., from hovercraft, to flying machines, to space-based weaponry, but for me it is the powered armor that is the biggest draw. My two favorite books, Heinlein's Starship Trooper and Joe Haldeman's Forever War are "hard sci-fi" stories that deal with powered armor wearing soldiers, and I think that's where I get my interest in Ma.K.'s Super Armored Fighting Suits. This is S.A.F.S set is a 1/35 scale set from Yellow Submarine.