Whoa, whoa, whoa!
Sorry I didn't see this before it got to 3 pages.
Richard is absolutely correct. Slides and frames are machined at the factory in Deer Park. They are then sent out to have the various finishes applied. Application of high tech finishes is not economical on a small scale, plus it involves a lot of environmentally sensitive processes, etc.
When Maria says she is waiting on slides from a vendor, she means she is waiting to get the slides Rohrbaugh machined back from the vendor who applied the finish.
I am a bit fuzzy right now and can't recall if I am supposed to know who the vendor is or not...so I won't say.
All is well, and your favorite guns are designed by Rohrbaugh, machined by Rohrbaugh, hand finished by Rohrbaugh, hand assembled by Rohrbaugh, test fired by Rohrbaugh, and cleaned and inspected by Rohrbaugh.
As for why they are so "rare" -- I am not sure that is true. The R-9 has been covered in many magazines, many times. It has been on the cover of several.
My favorite gun store is not very big, but usually has one in stock. Every gun show I go to has one. Most experienced shooters know what a Rohrbaugh is -- even if they can't pronounce it right.
Lets face it -- 5,000 guns is not a lot. How many Glocks have been produced? 750,000? I would guess at least that many and probably far more.