I have G22 Gen 4 with Lone Wolf Barrel and some extra Magpul mags. It shoots great. I don't feel any difference compared to my M&P40 with storm lake barrel at all in terms of accuracy etc. you should only need to swap out the barrel and get the mags which was what I did, but I did see some people online also swap out the recoil spring which I haven't felt the need at all. definitely not the extractor. Lone Wolf is cheaper because it supposed to be made in Korea, vs storm lake is made in USA. Some claimed Lone Wolf has less milage than Storm Lake, but I never could find any data to back that story up. I think it's just the buy-US BS. Americans were the ones pushing globalization in the first place. now this bull? well, that's off topic and another long debate somewhere else.