Interesting combination of parts. As for whether the band is original to the rifle, one wonders...could Long Branch have supplied some early parts to Savage early in the latter's production? Perhaps.
The SM41 sight guard is a bit odd though. Can't see any reason for that to be on there, other than pure fluke.
Unless of course both parts were added by some enterprising soul intending to make the rifle look more unique to complement its 0C---- status. Where it came from would perhaps indicate whether that might the case.