The JW15 is a bolt action 22 that's a copy of a Brno No 1, similar to a CZ 452.
I'm going to guess that the semiauto is a JW14:
I haven't had one of those, although I have had a couple of JW15s. The Norinco copies are somewhat crudely fit and finished. I had to reshape the safety on my 15 with a file to get it so you could move it with one hand. Once I got that sorted out, it was very accurate and I've had no further problems. It's a lot of gun for the low price, but be prepared that you may have to fiddle with it a bit.