And I thought for sure it was a shot gun reciever. Oh well. Parts gun for sure. Check out his other stuff on gunbroker and just pick any gun, can you say, gee I smell cold blue. It all looks cleaned and spiffied up. 
I would much rather purchase an uncleaned rifle from anyone than have them hose it up or make it un safe like the torched applied color case job.  I picked up 2 rifles today from my friendly dealer who handles my transferes and he asked gee Mike are you going to clean them up? I explained why not really quick and he caught on. 
Mike

One thing to always remember is if is is a collectable gun it should be close to originalo as possible to keep it's value. With single shot rifles that have been altered by adding new barrels or other items such as scope blocks it does not really effect prices that much as they are shooter and not really collector guns. A very well known fellow collector told me how an acquaintance of his loaded up a 1800's Colt revolver and proceeded to shot it, it blew up. That was a very expensive in nice condition Colt, now trash. One friend is missing several fingers from a barrel blow out on a fine old muzzleloader that did not even have a slug in it, just powder and a wad. Some of these fine old guns I think can be shot but they really need a good inspection before shooting, and that is the one thing about refinishing them. There are some unscrupulous fellows out there who will weld things up to look good but they may not be safe. Keep your eyes really open when purchasing something so you do not get hurt by some one else's work. There are a lot of BUBBA gunsmiths out there that have no clue, they think because they read a book or two, have a lathe and bluing tanks then they are bonafide gunsmiths, oh and they might own a welder too.
There are a large amount of Real Gun Smiths here on this Forum such as John Taylor, and others that I will trust with my work any day. But there are some here localy in my county that I would rather not have do work for me. The Smiths on this forum are top notch and valued for the quality of work they turn out.  They do not build junk/crap like some others do.
Mike
Mike