I rec'd the Apex polymer SD AET and replaced the stock trigger, it's the only modification whatsoever to my SD9-VE to the workings of the gun. I'm liking it so far...dry fire only...for real hopefully this weekend. I like the differences even if I can't articulate what they are yet. It works even keeping the stock/no springjob pull on it. Kind of...fine touch but with less fanfare as the whole pull mechanic happens with more precision but in less pull distance at once. The "roll" putting english-on-my-pull deal I developed along with using very close to the middle-tip to articulate the trigger....none of that is needed anymore. Although I did get rather good with controlling the pull, I guess if I prefer it the hard way I can replace it, but that's not gonna happen. This trigger feels just about as good as my friend's H&K USP Tactical .40 stock trigger. Whatever that means, but that is a really damn nice gun (and trigger).