Regarding the match trigger kit (the first one referenced), I just had this kit installed in my USP 45. I got it new in August, put about 1200 rounds through it, then did the match trigger. I've put about 250 rounds through it with the match trigger. It is nothing short of of fantastic! I'm sure you can search and find all the details of everyone's opinions on it. In my case, I have current experience with and without. I really like it; smooth, light, short travel in SA and lighter shorter travel in DA.
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