Like Larry says, true electro plating leaves a mess. There are a bunch of heavy metals that need to be dealt with in the strike tanks. Yes, it may say in the SKB sales material the finish is "Black Chrome" but, I'm always suspicious of sales material, less so of an engineering report or tests.
The SKBs I've handled were blued. I will say I'm not terribly interested in far eastern manufactured guns, and haven't spent much time seeking them out.

Best,
Ted