I know I'm a little late in posting a reply to this topic, but I have some experience with these weapons. I am a past owner of a Maruzen Micro Uzi and a WA M11. I am a current owner of the KSC M11. While I do not speak as an authority on the inner workings of any of these guns, I can say with assurance that my preference is definitely the KSC. The Maruzen Micro Uzi was way too plasticy looking and did not (in my humble opinion) make efficient use of the gas in the magazine. It seemed to run out after only 1 to 2 mag loads. Also, there was a noticable lag in power after a long burst of full auto. The Western Arms M11 seemed to suffer the same problems with the exception that it looked better than the Uzi. On the other hand, the KSC version has never given me a hic-up (even after 4000 rds). It digested everything I've ever fed it (including paintballs). It keeps it's high ROF without the lagging effect of freon fade. And it sounds incredible to boot. I've got a Tanio Koba two stage suppressor the really cuts the noise level down as well. For GBB sub guns, the KSC has my vote. Now, as far as the new Maruzen MP5K is concerned, if Maruzen has cured the plasticy problem and gone with something more akin to the TM look, that will be a plus. However, if the performance is closer to the Uzi, then I'd say save your money. Anyway, thats just one man's opinion. Take it or leave it.
TheRev
C'mon you apes, do you wanna live forever?