Got my k100 mk7 today.
Pretty impressed overall seems like a lot of gun for the money. Feels very strong and we'll built for its light weight, very low felt recoil and I'm used to shooting a cz tactical sport with the same load, decent trigger, seems to be accurate.
Negatives so far, sights hit about 4" left at 10 yards out of the box.
The included mag will not drop free and does not seat well. I got 4 extras from jg that all work perfect, the one that doesn't drop is the only one with a black follower.
Stripping it down and putting it back together had me cursing the first time but I did it a few more times with less trouble. Still the worst procedure I've seen.