The SIG MP48 was the result of a series of successively cheaper and simpler iterations of the MKPS design. They kept the basic receiver geometry, but lost much of the finesse. The MP48 in particular was very compact, with its 8″ (200mm) barrel and collapsing stock. It kept the really high rate of fire of the MK series, and also its folding magazine well. All in all, it is a very nice functional gun, but just doesn’t quite have the magnificent magic of the MKPS.