I'm glad you were able to get another step closer to your finished project. I'm also glad you were able to wait and find a Speed Six, seems a lot closer to what you wanted your project to be. Hope it brings you many years happiness.
It was a company that made aftermarket bisley hammers for the rugers. Been a while, but maybe it was Power Customs. I emailed the owners and asked if they had any seconds as I only needed the spur, and they sold me one cheaper that their replacement ones. I cut off the bisley spur and then hand a friend who was a expert welder help me weld the spur onto the cutoff secuirty six hammer. I did an entire thread on the project here: https://thefiringline.com/forums/showthread.php?t=472415&highlight=bisley+hammer