Felix. BigJim can sandblast the riser clean for you before dipping - saved me a bunch of work! Of course you'll probably want to plug the extra holes and sand smooth before sending to get dipped.
If you need parts: screws, strike plate, rubber shelf pads, leather plate or latch pads, or even the little Bears for the latches, "inrut" (Monte) makes just as nice as the originals!
I have the opposite problem regarding dipping my LH A or B Mags. Both are in pristine condition and I can't bring myself to cover them. Frankly, I was sort of silly buying this RH riser but maybe my son will want it. I guess I just wanted a "project"?