With Christmas rolling up I decided to put my new Foreman rotary tool to good use and wanted to try to make a holster/ stock combo for an old Single Six I cleaned up for my niece, I know I'll need to pay the tax stamp for a SBR category firearm, but I hope it'll get through before gift wrapping time. So far I got the holster part of the stock more or less down, now what I need is some insight as to how to lock the grip part to the stock. From what I can see the Mauser uses a slot of some kind on the back of the handle to attach the grip to the stock; but the grip of the Single Six doesn't look like it would take to the same treatment so any ideas?