Some Russian copies are better than others I have 2,
there's a Fed 2 and a better made Zorki C alongside a genuine Leica IIIA with a good f2 Summar. There's no doubt which is better made. Unfortunately the Elmar infinty lock can't be release on the Fed 2.
I picked up the Zorki C at a camera fair for £5 ($8) about 6 weeks ago with no lens.