I am selling my KWA because it is no longer used and has to make way for another replica.
The Kwa comes with an upgraded barrel, bucking (60° macaron) and a flat nub made of maple leaf and shoots great. Unfortunately, the replica shoots just above 1.2 joules with adjusted hopup, so take that into account. You could put an M100 spring in it, which would bring it neatly below 1.2 joules.
The well-known problem with pts magazines is the miss feeds and I got rid of them. I personally need all the m4 mags for my other builds.
This awesome replica with big recoil that you're dreading could soon be yours!