I have a very poor report regarding the C93 made by Century. I bought mine in california, and took it to the range with commercial rounds. I had failures almost 2 out of 5 rounds. I stopped shooting mine once it started to shred brass. Some of the brass I did collect were stretched out like an hourglass and others would get the bases ripped off by the extractor. When I bought it I checked the bolt to bolt carrier gap with a feeler guage and found mine to be at the bottom of spec, but once I shot it I didnt have any gap at all. If you want to read more on this read the 1000 or more articles (google c93 bolt gap) where others talk about it. Now I called century to see if the would repair it. They said since the rifle was sold to me almost a year after it was manufactured that they didnt cover it under manufacturers warranty. WHAT? So...I sent it to a very reputable gunsmith that mainly works on HK rifles and he was shocked at what he found. The barrel was loose, and the end of the barrel where the chamber is was hand spun on a belt grinder and sized down where it could be pushed into the trunnion without a press (I have the barrel sitting on my desk at home to prove it). I forget how much pressure he told me is required to press the barrel in, but it took only two "taps" with a 1 pound mallet to knock it out. They welded the triple sight on, and didnt fill in some of the welds on the reciever. The rollers were already oversized to attempt to get it to pass quality so I could not just fix this with a roller type of fix. So...my nice $500 rifle ended up being almost $900 to repair. I had to buy a barrel, new triple sight, have the barrel pressed in and then headspaced correctly. They also filled in the welds, and I had the rifle re-coated. It now works correctly.
If it was me, I would pass on anything built by century. Some people live happily ever after with theres, but there are more complaints regarding the C93 than praise.
The other thing...if you look at a C93 and look at the numbers stamped on the parts you will find that these are not HK93's, but the slightly older malaysian HK33.
Hope this helps...
Here is my long story on an HK forum, with more details!http://www.hkpro.com/forum/hk-clone-tal ... gap-3.html
I hear the PTR series of these rifles, or the Vectors have hardly any problems at all. I would check those out.