None of them are chrome lined.
Its kind of luck of the draw on bore conditions, but I was able to get 2 kits with bores that are shiny with sharp rifling and just a few speckles. Some have gotten kits that they believe are unissued.
There is rumor that "like new" M70 kits are coming before the ban. But who knows how much better they will be.
From the people that I have heard build them and shot them at the range, they say they are an above average shooter and this is due to the barrel being slightly bigger than a standard romy barrel in comparison.
So yeah, they are nice kits if you get your hands on a nice one. All the internal parts are really nice, the bolt carrier is damn near polished stanless.
I hope this lil bit of info is of help even tho I myself havent built one, but I have been doing my research since I will have 2 of them to build.