I bought a new Mauser HSc imported by Interarms back in 1974 becuse it looked like a good little gun that would be easy to carry. I got rid of it after a couple of years because I never could get it to cycle even ball ammunition reliably. It would fire the round in the chamber and then jamb on the 2nd shot more often than it would cycle normally. I won't own a gun if it's not reliable, so I traded it for a Beretta Model 84 and never looked back. The Beretta is 100% reliable.
If your little pistol is a copied version of the HSc, I'm sorry to say you probably won't be able to make it reliable. I tried everything.