Hi

Does anyone have one or have any info on their uppers ?  Are they good ? who makes the receivers for them and what kind of finish they have, phosphate etc. ?

Thanks

I have one mated to a RRA Lower. Fit and finish were excellent.

I've got a couple and they are nice uppers.  On one there's a little discoloration in the finish but you really have to look for it.  You'll never hear me complain because everything else about that upper is perfect and the fit the lower it's installed on cannot be beat.

BTW, receivers are not phosphated.  Phosphating involves an acid bath that would completely dissolve the receiver.  Pretty much everybodies uppers are hard coat anodized, some places put a teflon finish over the anodizing.  

I'm pretty sure DelTon get's them from Continental Machine and Tool.