I keep hearing that an SPS stainless replaces the BDL and the blued SPS replaces the ADL. I've seen a blued SPS up close but not the stainless. Can anyone tell me what the stainless SPS has that the blued version does not? I've never seen a BDL and an ADL up close either.

I'm just wondering because I like Remington and may be considering a stainless SPS for my son in 7mm-08.

Thank you in advance