I'm assuming this is because you're looking for a square butt instead of a round butt grip?

While Ahrends is out of business, you might be able to find his grips for sale somewhere, i.e. eBay or one of the auction sites.

Off the top of my head, I know Craig Spegel can make his boot grips for a square butt K-frame, but last I heard his turnaround time is over a year, unless you can find one of his grips for sale somewhere.

BluMagnum grips might be able to help. While they don't offer boot grips, per se, they are open to modifying their designs for customers, so that might be an option. They are expensive though, north of $200, I believe. I don't know what their turnaround time is.

Hope that helps.