I was having stovepipe issues with my brand new, (and yes it was thoroughly cleaned before ever being fired) M&P 15-22, and after 2 trips to the range, cleaning it after each session, I had seen enough.
I ordered the Volquartsen extractor and installed it this weekend. I figured for 14 bucks I had nothing to lose.
Just to get an idea of how well it would do, I went through a box of 325 rounds of Federal Automatch Target ammo.
Not one stovepipe out of the entire 325 round box, whereas before I was seeing a stovepipe after every 30-40 rounds or so with this same ammunition and the stock extractor, and worse with the Remington Gold.
So far, I'm quite happy with the Volquartsen extractor.