You have the model correct, it was a model 30 but it was sold under the Savage flag.

I have a model 29 wearing one of these sights and there are no makers stamp on it anywhere. It may have been made by Lyman for Savage to sell on there guns but must have been patented to Savage. Unlike the Lyman 54 sight which was only made for the Savage model 1920 rifle, Lyman stamped it and sold it seperately for the rifle yet supplied them to Savage. Understand what I'm saying cause I'm starting to confuse myself now.