I will have to say that I might have got a early one or just a lemon it is real disappointing after all the good things i have heard about the RO , I will list the things that in my opinion have room for improvement .
#1 when they engrave the last three numbers of the serial number don't put it where the disconnected path is, mine was so rough it cut groves in the end of disconnector.
#2 don't use a sander to remove burrs on breech face around firing pin. mine has a irregular wallow that measured .25 by .35
#3 the J cut on breech face should be same depth a the rest of face, mine had a .004 step
#4 the center leaf of the sear spring should be smooth at contact point of disconnector, mine was sharp edge and had all ready gouged the disconnector just from people playing with gun at gun show.
#5 when they put the grip screw bushing in if they bugger one up change it out before putting wood on, on mine they did bugger job and left burrs about .015 high on both sides of one bushing then forced the wood down over it and cut groves on each side of hole.
#6 the plunger for the slide stop was rough on end and to long there, on mine there was no way to slide stop in with out at tool to push plunger in with.
#7 the barrel to bushing fit should be less than .0031
#8 the bushing to slide fit less than .0034
#9 the gun was full of grit, it felt tight when I bought it but after cleaning out it is loose!

to say the least i ma very unhappy with Quality of RO