So here's my silly take on a "snubby" Ruger. This is a 1975 vintage Standard Auto. I have always preferred the original design, as I find it simple to take down before they goofed it up with the Mk II "improvements." This one wasn't seeing much use, and I wanted to cut and thread, but the tapered barrel can look a little odd depending upon where you chop it. Also, I am not a red-dot sight user on pistols, so I needed to preserve the fixed sights.
My eventual plan was to chuck the upper carefully in the lathe, adjust for zero run out, then drill and ream to allow the original front sight band to separate from the barrel. This done, I cut to the desired length, turned a tennon for the threads, but then cut that back by the additional width of the front sight band. I succeded in getting a nice slip fit, and after de-greasing, I mounted the band with Locktite stud grade fixative. With that done, I changed the taper of the remaining barrel to match the original as closely as posssible. That left only cutting the threads and crowning. I also made a replacement front sight blank, but after sighting in, it was so close in dimensions to the original that I simply re-installed that.
I rather like it, and I think it looks like what the factory might have offered if there was a Vietnam contract for a short, threaded Ruger Standard Auto. Perhaps there was such a contract, but i don't recall ever seeing a photo of such a creation.
I'm no real machinist, but boy, do I love having my own little machine shop to tinker around in!
IMG_2422 by
Jim QRB, on Flickr