There's been some confusion on FEG clones. FEG makes several models that look like the BHP (including one SA/DA model!) that are not clones.
AFAIK, the model PJK-9HP is the only real clone of the BHP.
I have heard mixed messages from others on whether all parts will interchange. But I know from first-hand experience that the following parts interchange:
-Extractor
-Extractor spring
-Firing pin
-Barrel
-Magazine
And I'm nearly positive that the recoil spring and guide rod will interchange. Should be easy to determine if the slide will interchange.
So that leaves the trigger and hammer assemblies, and they look mighty similar.
Mine is a good shooter, similar to Hermit I guess.