The gripframe is from an Uberti made "Thunderer", available from VTIgunparts.com. It screws on. It is made a hair wide for fitting, but can be used as is if you aren't into reblueing the sides after shaving.
Call Lisa at VTI 860-435-8068. The assembly of backstrp, triggerguard and wood comes compolete with a new butt screw to keep it together.
he part number is 338011/ass. Price is $172.00.
If you want it checkered, it is 338011/ass/ck, cost is $180.00
The Thunderer gripframe feels good and points well. Don't get the "Lightning" grip, it is a full birdshead (no hump) and fits the 32 frame.