THE U9 WAS MADE IN ENGLAND BY BSA.THE J9 WAS MADE IN YUGOSLAVIA.WHEN I GOT MY J9,I WAS DISSAPOINTED WITH IT.EVERYTIME YOU OPENED THE BOLT,IT CAME RIGHT OUT OF THE RECEIVER.THE BOLTSTOP WOULD NOT WORK.THE U9 MODEL YOUR LOOKING INTO WAS MORE EXPENSIVE, SO I ASSUME THE QUALITY IS MUCH BETTER.