This week, I got the rubber portion of the old style GP100 compact grip on eBay for $20 shipped! It came with the aluminum mounting dowel, but no screw or side panels. It was new in the Ruger labeled zip bag.
I had an old SP101 grip...I took the black plastic panels and screw and put the new grip on my 3" GP...about 15 minutes ago.
The Hogue grip works great, but adds too much size and bulk to the 3".
Still waiting for my Flashback...I would like it now, please.