I wish you well with the S&W. Unfortunately, thus far I have had the opposite experience. In approximately 1500 rounds, I have had approximately 70-80 failures to eject, a number of failures to feed (probably my fault) and almost one firing out of battery which would no doubt have hurt my buddy, who during the same time has put about 3,000 rounds through his Umarex/Colt, has had maybe a dozen light strikes during the first few mags worth, with the rest running fine. And his new Umarex/H&K MP5 has run its first 1,500 rounds with nary a single problem of any kind. Right now I wish /I/ were the one shooting the Umarex rather than the S&W.

I hope this (my S&W 15-22 operation) will get better (I've made one more change/adjustment to my ejector, and if that fails will be sending the gun back to S&W).