April 27, 2006, 12:28 AM
The pin is used to unload the hammer from the mainspring so you can dissasemble the gun. Go to the Ruger (Sturm, Ruger & Co., Inc.) site to download the manual if you don't have one.
Nice gun! I had one in SS some years back with a 6" barrel. I was dumb and traded it for, :hmmmm2: well I can't remember what I traded it for now, but I regretted it for sure.