Notice this post is from 2009. It's now 2017 and I just had the same. I went to shoot my new 15-22 for the first time at a steel math Saturday. All was going well until around round 160-170 when I started to have failure to extract problems. Well that ended my day. When I got back home on Sunday, I took a look at the rifle and the extractor was missing along with the spring and whatever else goes with it. Need to contact S&W Monday. You would hope after 8 years they would have fix the problem. My disappointed. At least my SW22 Victory is running like a champ.