I haven't cleaned the cosmo off, but I grabbed another pair on the lowest regular sale price (not cracked stock) - my first one (early sale price) came in all matching and pretty nice, so i rolled again at $50 less and came up with some non matching.
Good condition, but one has a non matching receiver cover and the other has a bolt carrier, receiver cover that match each other and are different from the rest of the rifle, except the bolt, which is a third serial number. I'll verify headspace when I get around to cleanaing it up. Might be a project gun, might end up being a more or less accurate one, who knows. I may sell it off and improve my collection.
the one with the non matching dustcover ends up being a family beater/shooter, I expect.
it's always important to remember that prices go up, not down.