Does any one know if the FN made 70's parts will interchange with the New Haven guns? Will FN sell parts to gunsmiths? I am looking for parts for the Claw Feed rifles and need two magazine springs and followers for the 375 H&H. I have looked at most of the sites on the net and have not been able to locate any. MWG, Numrich, and others say they are discontinued. Any help appreciated.