I actually modified the BAD ASS instead of the trigger tang. For me it wasn't about getting the safety installed (if that is what Justin is talking about. Or is it turning the safety on to "safe"?), it was the creep that was introduced between the interface between the tang and the safety. According to Roger, this was an older BAD ASS so he sent me an updated safety drum. With the updated drum, I encountered the second problem I discussed where I couldn't get the safety to rotate to "safe". For me I preferred to modify a $60 part as opposed to a $300 part so I modified the BAD ASS (original drum not the new drum). Removing material slowly from the flat of the drum I was able to get rid of the creep while still maintaining full safety function and proper function with the SR Gold. Ironically, I have an older AR Gold (.223 version) that actually requires a thicker safety drum to have full safety feature function (older AR Gold seems to have a different trigger tang than newer ones I've seen on the net). Most safeties including the older BAD ASS drum I had would not return the trigger to the primary sear after a simulated 'drop' to the secondary intercepting sear. Installing the newer BAD ASS drum worked perfectly with my AR Gold and seemed to actually fit better than the safety I received from ATC. Now I haven't been able to compare the SR Gold against a Hi-Speed, but I have tried an SSA-E which is supposedly similar to being a non-adjustable Hi-Speed. In my opinion, I felt like I would get better and more consistent results with the SR Gold than the way the Geissele is set up. YMMV.