I had the Century Cetme, the G-3 is a good rifle if you don't mind the fluted chamber, but the Century's suck, they are notorious for having the sights welded on crooked.
I would buy another one from another maker but I would not consider another Century ANYTHING unless I could shoot it first.
Also the Century stock is cheap plastic crap that does not even accommodate the sling they send with it, plan on replacing the furniture out of the box.
Again, my complaint is not with the G3, it's with the crap job Century did on them.