you can get the gen 3 trigger bar with or without the serrated trigger, look at the lonewolf site and it lists both....i personally would get the gen 3 trigger bar for sure, i dont like the feel of the 4th gen trigger with the bump on the bar.....
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22,23,27, Taurus PT101FS, Sig P226, S&W 4006
I read the SP00357 is the gen3 trigger bar without bump. Is that correct? but I read too, glock has like 2 similar models, no sure it come with the bump or a new angle in the rear..