KSC = KWA
Same stuff, different markings. KSC uses realistic trades, KWA says... "KWA" all over the guns. Mags from KSC System 7 are compatible with KWA New System 2, and vice versa.
If you want realistic look, get KSC.
If you don't care that it say KWA, Made In Taiwan all over the gun, get KWA.
I have 2 KSC pistol (Sig P226R, M1911A1) and a KWA MP9 subgun. I love them all.