Not sure what I have here

[sheepherder]

Just to add my $.02 worth (and because I love reading my own posts), if it were mine, I would keep that barrel but remove the sweated-on front sight and turn down the muzzle very slightly to mount an original Luger band + base...and of course a blade...The band/base would come from a shot-out donor...and would probably be sweated on as well, but at least would look 'original'...