I know cops that have had their Glock uppers done, and know others that have had their SIG slides done. In fact, I think SIG 220s were some of the first guns Robbie ever did with NP3. The stuff is awesome. Wipes clean with a cloth, self lubricating, etc. You sure of the price? Sounds like it went up since last time I checked. Wouldn't a hunting rifle done in that stuff be nice :-) if a guy could afford it!
My SIG rusted in a matter of hours when I got off a plane in a tropical climate. The agency shoved a Glock down my throat shortly thereafter so I sold the SIG and never sent it off to Robar. If I could carry a personally owned gun again that wasn't stainless, you bet I'd send it for NP3
rr