I just put the Apex hard sear for the M&P 45c in mine and dropped the pull from 9.9 lbs. to 5.5. The same hard sear for the 45c also works in the Shield. I dropped the Shield trigger pull from 6.7 to 5.2 lbs. They both have an excellent reset and work very well. Watch the videos that are on line, the ones from Apex. It took me about 20 min. for the first and 10 min. for the second. Take you time its not hard to do.
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