Accuracy; a little better
Ejection; nice even pattern
Sights; can be a problem. I have two KKMs. They both shoot one inch higher than stock. You can't get a taller front stock, Mepro or Trujicon. Ameriglo has some very nice offerings; but you may wind up with having to fine tune your Ameriglo purchase to complete the perfect POI.
Overall, unless you are a reloader, it's not worth the money