I'd suggest being careful with the C93's, at least see if you can inspect one or more in person if possible (rather than a "blind" order from an on-line store). A number of folks so far have had OK things to say about them. Others have had issues ranging from the relatively minor (receiver out of spec so couldn't take scope mount or collapsible stock) to the alarming (excessive bolt gap).
I don't own one (have a V93 instead), but got to take a close external look at 4 of them at a gun show last weekend, one vendor had 8+ C93s all stacked up - $799, in sequential serial numbers. Each one seemed to have a different quirk.
The rear sight on the first one seemed to be permanently fixed in place - I could not get the drum to rotate (stopped trying when the vendor gave me the evil eye).
The next on had a horrendous finish on the stocks (looked like my little one did it with black paper mache in daycare). The finish on all of them did not look like a match to the original HK, but this one was really bad - almost funny.
The third was the opposite of the first - the rear sight would spin all right, like a roulette wheel - would just not lock into place. (at this point, someone else picked up the first rifle, and somehow cut his finger trying to twist the rear sight).
The fourth had a rattling sound inside, like a loose part or screw bouncing around. The safety selector was also very loose.
Yes, the rear sights on numbers one and three could possibly be fixed or replaced with a new drum or screw. Number two and four were just really bad builds.
ALSO, I noted that these C93s came with the carrying handle attached (a nice add), but did not come with bipods (some of the early C93s did a few months ago). The C93s also come with a "navy" lower receiver, i.e. with a straight pistol grip, rather than the contoured one you usually see on HK 93s and HK 33s.
I was hoping to have an "inexpensive" companion for my V93. Let me use that as another point of comparison. My V93 clone is closer to an HK33, with a vector receiver built by IGF with an HK33 kit. Set me back $1599, but it runs flawlessly, and has outstanding accuracy. Had the HK33 3 position S-E-F selector (clipped and pinned to fire only in semi in E and F mode).
I recently fit a collapsable stock on it (which can be a problem with some of the Century builds, as the receivers are reportedly out of spec. So if you go with a C93, be careful before investing in a collapsing stock or a scope claw mount as they may not fit).
You might want to take a look at the V93 pictures below to compare with a C93 - there will be some large differences in config, finish and fit.