I did something along the same lines, bought a LEM kit from HK, and put it into a HK45ct, at that time I was shooting mostly Glocks and dabbling in LEM, as we all know that dosen't work.. I could'nt shoot the LEM worth a damn..I took the LEM kit out, converted the HK45ct back to DA/SA. A few years later, I switched to shooting DA/SA, and late last year I traded a G19, for a USPc in .45 auto, even up.. I put the same LEM kit into the USP, as the DA/SA trigger it had was horrid..The kit went in without a problem, all I did was to go over to the HK Pro site and look in their reference section to brush up in installation, and to make sure I had all the parts..It took about 20 minutes to install. The USPc is now my EDC..