I'm the happy owner of a Norinco TT-Olympia .22L.R. caliber. It's an all steel pistol that actually looks like a real pistol, not like a plastic toy or a futuristic gun; it's easy to disassembly and clean and cheaper than dirt to purchase; I wanted a .22LR. pistol with all those features at the same time and the Olympia was the only gun that fitted them 100%.
I don't like the wooden grips which are crude and needed some work to make the magazine release button function properly (the plastic grips I saw on other examples are alot better, but I can't find a place where I can order them). I also had to locktite the sight's screws after the first range session, but that's all.
External finish is decent while internally you can see alot of machining marks, but you can also see the hardness tool imprints on many parts (thing you can find today only on pistols like SIG-Sauer, for example). The internal finish of the barrel is perfect and the magazines are decent. The gun is delivered with the optional front weigh, the screws to mount it and a steel cleaning rod. The pistol is very very reliable; I had problems (2300 rounds fired in a year) only with 150 rounds of Remington Subsonics which proved themselves to be TOTAL JUNK. The accuracy is incredible considering the sight radius and the sights, which are exactly alike the ones on the original, 80 years old, Walther. All things considered I LOVE my Olympia.
For what is worth I've also red only good things about the Norinco 1911 and NP34.
The .223 Remington Norinco M4 and the copy of the Garand .308 Winchester caliber are very good according from some friends experience.