[Scorch]

With the barrel band and the forend it has on it, that is a carbine, not a rifle. Still, it would be interesting to actually see it in hand, just to see if that was a factory installed 1/2 mag or if it was a repair. As far as I know, saddle ring carbines came with the full-length mag only. But Winchester would do just about anything you were willing to pay for.

And yes, that rear sight is relatively uncommon. Winchester had a bunch of different sights on their rifles, some common, others relatively obscure. You could even get an express sight with silver centerline and range numeral inlays for your rifle if you ordered it with one.