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Apex Tactical FSS Trigger kit for M&P Pro 9MM

Discussion in 'Gunsmithing and Repairs' started by cbmax, Feb 18, 2013.

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  1. cbmax

    cbmax Member

    Mar 3, 2006
    Hi all,

    I ordered this kit and finally got through the installation. It took me three days and two orders for additional parts.

    Here is a run down of the installation.

    First you have to remove the rear sight to replace the safety plunger and spring. Removing the rear sight was awful. I put the slide in a vice and pounded the crap out of the sight and nothing. Made sure I was hitting it out the right way and I was. I finally whacked the crap out of it again and it finally moved. I thought the sight was going to need repacing but I touched it up with a bluing pen and brought it back to good as new.

    Next was the trigger install. I was able to remove the stock trigger easy enough. Next you have to attach the factory trigger bar to th new trigger. This is a PITA. Trying to line up the little pin on the trigger without mashing it sucks. I ended pushing in the pin without capturing the trigger. Took forever to drive the pin back out and get it back on the trigger bar. Didn't think this was going to happen because the pin got boogered up a bit. Next was getting the new trigger return spring attached to the trigger bar. Next you have to get the trigger pin through the trigger housing and through the trigger without the trigger return spring falling out. The kit includes a slave pin to make this process easier but it still took me a day and a half and at least 50 tries. I finally got it through.

    Now I think I am in the home stretch! Now all that is left to do is put the new sear in the new sear housing block. I have an older gun and in 2010 S&W changed some parts. I bought what I thought was the correct sear housing. Turns out I bought the wrong one. By mistake I got one with an internal lock. I also lost the locking plate cover.

    I ordered the correct sear housing block and a lock plate cover which arrived today. I replaced the sear in the sear housing with the one from Apex. At first the sear would not reset. I put the factory spring back in and after playing with it multiple times it finally worked.

    The end result is a light and crisp trigger with little pre-travel and little reset. You can barely even feel the reset. I have to thoroughly test the gun at the range, but so far I am pleased.

    I have average mechanical skills, but I will tell you the install process was awful! I think Apex should include the trigger bar already installed on their trigger as an option. I would pay more for it. I also think that the install video that they put on YouTube should be far more detailed and sharper in order to better show the small parts!

    All we be good if the kit holds up. Stay tuned!

  2. Buckeye

    Buckeye Member

    Apr 22, 2006
    Sorry you had so much trouble. I'e done apex kits on a full size 45 and a 9c, took about 45 minutes on each. I used an aluminum bar wrapped with electricans tape, that fit pretty close to the width of the rear site. If you used a wimpy punch, I could see having a problem. Some sites are stiffer than others. I love how the kit improved both of my guns.
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