Had one years ago; terrible trigger that defied  all efforts to improve it much.  Never checked the twist rate, but shot only 55gr stuff and was able to get better than 2MOA with some loads.   The gun took a ridiculous amount of tinkering and modding to get a scope mounted; I eventually found an air rifle mount that could be made to work with some cutting and  grinding and filing, but  then it needed a  cheek riser  because of the ridiculously high line of sight.  There is so little room on top for scope mounting that  I  needed to install the mount with the extended  portion facing forward, towards  the muzzle, in order  to get a scope mounted with a usable eye  relief...but a much-shorter friend (who liked the gun way more than I did and eventually bought it) had to reverse the mount...more cutting, grinding and filing...to get  it to work for him.
I admit that I loved the external spiral hammer marks on the nicely-polished and nicely-blued barrel, but the gun had indifferent metal finish on all other parts and the wood was as bad as that on a Norinco M14  clone...and that's pretty bad.
  
I could actually see  owning another one in 7.62x39, with the intention  of  using  it with its original iron sights, no optics.  Given my druthers, I'd likely snag one of the synthetic-stocked versions, which  had a much  sleeker and cleaner look than those hideous pieces  of wood.  But whenever  one of these  appears on the EE, I'm  reminded of the  old H&R/NEF singleshots; can't get 'em new anymore, so the owners think they're valuable  collectors' items.  They're not; not even close.