Using Google-Fu works well for finding many things. Gun-Shack & Numrich stock many factory/aftermarket parts. And there are many other places that have aftermarket Bolt Handles with replaceable bolt knobs, like Glades armory for instance.

As for parts matching, your Model 11 shares every/almost every part with all Model 110 Short/Long Actions, Model 10/110- 16/116. If you ever Need/Want a part & you’re not too certain, just ask us. As you can see, we answer questions at pretty much ALL hours of the day.