Hi Gary,

Nice stocks! The serial # is from 1980 to 83.

The factory N-frame RB has K-frame proportion until you get about halfway up the back strap from that point on it's still an N-frame.

I think they have to be N frame stocks because the top is sytrictlyN frame. Someone may have altered them from N frame SB stocks.

The only RB models with complete K/L size RB grip frame are the X frame 500/460 Mags, 329, 325.

__________________
Jim
S&WCA #819