Thanks to all for the help. A bit more info is in order from my end. I bought it at a Gun Show this past weekend. I researched it a bit more and found the following; It has a plainfield 20" barrel installed and sits in a plainfield stock with perf. steel handguard. It also has an IBM trigger guard. The butt plate is Winchester, as is the hammer, and slide. I have not checked the other trigger parts yet, and it has the flip safety. It has a Milled adjustable (Type 2??) rear sight marked "PI" and the front sight is marked "N" on top behind the blade. The slide is the later type where the hood sweeps forward.
I'm not really looking at a full return to original as it's obviously been rebuilt at one time, and the 20" barrel keeps it out of our Canadianicon (restricted) class, but I would like to at least get a proper stock/handguard/barrel band for it. The proper trigger guard would also be nice, but the bolt doesn't really matter at this point.