Yes Numrich is very good to deal with, especially for hard to find items. The biggest problem is getting the import/export paperwork that all U.S. companies that deal with firearm/parts are required to complete. For older rifles, there doesn't seem to be much of a problem. I have bought parts for a Swedish mauser, Enfield jungle carbine, and a Belgium SAFN49. Until early last spring, I had bought M14 parts easily from them but then the regulations changed.
Excellent company. You should bookmark them.