You have a good lookin' set of stocks there, they're right at home on your Mod 15.
Smooth targets or "presentations" are the best looking grips IMHO, second only to Rosewood smooth targets.
(Well... maybe the fabled "Cokes" beat 'em out.
)
I put a set on the 6 inch version of your gun, a Mod 14. I'd leave those on if it were mine.
GF