An experienced collector would immediately be suspicious of any Winchester rifle with a strange collection of carbine and rifle parts. Normally, you would never encounter a carbine-style forearm with an octagon rifle barrel, and such a combination could indicate that somebody had done some tinkering to an original gun; however, this gun is actually made from leftover parts at the Winchester factory, to fill a large order of guns from the Metro-Goldwyn Meyer Studios for use in some of the studio's old western films.
As is often the case with historically inspired pieces, the gun's overall appearance is far more important than its historical accuracy. Yet, that doesn't necessarily devalue the piece of western memorabilia right away, though these prop guns usually don't come close to original Winchester rifle prices. For example, this prop gun replica of Winchester's Henry rifle made in the 1940s sold for just $130 at auction.