Go the their website
http://freedomarms.com/ -- you should be in the "About Us" tab (if not click on it). Scroll down a little past halfway and you will find:
Reddot Sight Mount
Freedom Arms is now producing a Reddot Sight mount for Trijicon & J.P. Enterprises Reddot Sights! They are available for the Model 83 & the Model 97 revolvers along with holsters that fit the sight mounted revolvers.
The mounts are available through your dealer or direct from Freedom Arms for $48.00. Dot Sight is not included. Call for details 307-883-2468.
I don't think they ever offered bases for the Doctor red dot.
Paul