My 917VS looks to be all stainless cept for the magazine which I know is nickle plated, but it doesn't really matter, I've hunted in the wet state of Washington all my life and never had a blued rifle rust on me, all you need to do is clean it when it gets wet and put some good gun oil on it. I wouldn't base a gun purchase on just that alone.
$249 is a dang good price, they sell for $280 here.