Ordered my trigger and I received it quickly and was almost as advertised. The trigger is installed and it works perfectly. Unfortunately there were two extra parts in the trigger kit that were not accounted for in the install instructions. I did not put them in and after calling Timney there tech told me the instructions were out dated and explained how and where to put the two parts that strengthen the trigger. I followed the tech’s instructions and only one part would even fit into my AR action, The other would no way fit where instructed to fit. I called Timney again (3 times) and I got recordings to leave a message and I would get a call back. Never got a call back. I guess I will try a different trigger next time or maybe a spring kit for a tenth of the price. Arm or Ally  did their jub, wish Timney would have.