Marsh,
They are not on the S&W Website. Call them to order. I got my 2nd set couple days ago to put on my 686 L-Frame Snubby as well. Although they are N-Frame grips, with a very minor sanding they are perfect for the L-Frame too. Heres a pic with the Grips on the 627 PC & the 686-4 Snubby.
All the best.
Carl