Brinks Smith & Wesson M&P trigger question

DLWinner

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I have a brinks issued Smith & Wesson M&P 40. It has a very heavy trigger. I’ve tried various Apex parts and I still cannot get the trigger correct. Does anyone know what parts are on the brinks that would need to be replaced? Is the trigger bar itself any different? Or the trigger housing?
 
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FWIU, the MA compliant guns have a heavier trigger return spring, a trigger bar with different geometry, and some say a different sear spring.

Both of those parts are inexpensive to replace.
 
FWIU, the MA compliant guns have a heavier trigger return spring, a trigger bar with different geometry, and some say a different sear spring.

Both of those parts are inexpensive to replace.

I’m thinking it’s gotta be the trigger bar at this point. I will check it out later and replace with a non heavy version if needed.
Are all of the heavy trigger bars stamped “H”?
Thanks again!
 
Did you measure the trigger pull?

Did you change the striker block and sear return spring as well?
 
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