RCA is a prime supplier not a re-marketer & makes Noveske's bolts & is one of the best black nitriding sources around & have a proprietary version...........they do lots of contract work for others like LMT; they are very transparent with what they do & make a full & complete line of BCG's at moderate pricing levels to very expensive for Titanium.
JP is fine, & make good products, but their guns are mostly for play & but get a lot of hype & are on the extreme high end, cost wise, for nothing you can't get elsewhere..............they also use Wilson barrel blanks, same as WOA. Also, they promote cryogeniclly treated barrels as a plus, but all that I know is that at best, it's never really been proven to be magic, so I draw the line at swallowing that much BS.
A good barrel from Craddock or CLE on any of their major blanks will equal any JP barrel for performance.
JMHO, YMMV
MM
