I bought the Henning's Shop upgrade kit for my Wonderfinish Compact. Although the trigger was ok I really needed the new rear sight. I installed the mag base pad, firing pin, and guide rod but left the sight and springs to a local gunsmith.
Went to the range today and the new rear sight took care of the low shooting problem. Trigger is very nice both DA and SA.
Very worthwhile upgrade. This gun is somewhat smaller than my Sig P220 SAS SAO so it will now go into rotation as my EDC.