I purchased this AoA drop-in trigger for a Glock 19 build. Unfortunately, the trigger's safety isn't actuating as it should. I reached out to AoA within the first 3 days of owning the trigger, which was almost three weeks ago; I have yet to hear from Customer Service after submitting two support tickets looking for information. My intent behind contacting AoA was to ask questions regarding the trigger to identify if its defective or if something else was going on. Unfortunately, due to them not getting back to me, I have no idea. Would I recommend the trigger? No. After spending $700+ on parts with AoA, would I shop here again? Not unless I got a REALLY good deal.