Wolff springs for Colt M1991A1

Welcome to the Forum.
Yes for the pistols springs, unless you get Colt springs.
Are you referring to magazines or magazine springs? I've never actually needed any magazine springs, but if Wolff makes the correct springs then I'm sure they are as good as they can get.

I just swapped out my original 80's recoil spring in my S&W 659 with a Wolff. Nice product, 100% reliable.