The Brown pre-finished stocks I've had do show paint chipping very easily.
Not saying it just flakes off in your hand, but they do chip. My current one has some areas where paint came off. I haven't bought a pre-finished in several years but the ones I did buy all came with a bottle of touch up paint - kind of sends a message.
FWIW, the Remington FS stocks, which are Brown Precision stocks in a Remington-only pattern, have not shown that same tendency to chip. Perhaps they used a bit better quality of paint on those?
