Hi, I hope you guys can clear up some confusion for me. I have done searches and found an answer I can fully understand. I have a USP variant 1 from the mid 90's and want to convert it to the LEM Hybrid trigger, while retaining the safety feature. Can you please tell me exactly what parts I need beyond the LEM kit. I have also seen some posts about needing to udate some parts of the system if converting. Please be as specific as possible. I am fully capable of doing this conversion, but I just can't seem to find out exactly what parts I need. Thank you for your replies.