ORF went out of business a while ago I think, but I'm guessing CAI bought the design just and is making it in-house. The real CZ-58 has an actual feed ramp, whereas the ORF (and CAI) design just has sort of a 'bump' there to nudge the rounds in the direction of the chamber. It doesn't seem to affect feeding at all, and I've never had a misfeed with anything I've tried after 1K rounds or so.
Like I mentioned, there are dimensional differences, and I had to do some pretty heavy filing to get the radius of the NEA handguard in the pic above to fit at all.
People also seemed to have problems with the ORF FCG occasionally, but so far mine has been flawless. It's got a nice, crisp trigger pull for this type of rifle. My only real complaint, and this is across any vendors build, is that there's no heat shield in the handguards and they get HOT...
I guess the key here is to think of this as the WASR-10 of the CZ-58 world. You want a top-end AK, go to Arsenal. You want a top-end CZ-58, CzechPoint is the place. In both cases get ready to spend a grand or more.
This is their CZ equivalent to the WASR, a budget version for 'the rest of us'...
