Apex FSS kits Poly or Aluminum Trigger

aceridr50

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I am getting ready to order the Apex FSS kit for my M&P 9mm and was wondering whether to go with the Polymer trigger kit or the Aluminum trigger kit. Other than the metal trigger maybe lasting longer than the Poly is there any other reason to go with the aluminum kit? It's not like I shoot thousands of rounds a month so I can't see myself wearing out the poly trigger anytime soon. Those of you that did the kit which did you go with and what was the reason for your decision.
 
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Trust me, go with the polymer trigger. The pin on the aluminum ones are too big for the hole, thus REALLY hard (as in next to impossible) to hammer in. I have one gun with the aluminum trigger and 4 more with the polymer trigger. Lots of people have issues installing the aluminum trigger. The install on the polymer trigger works like it is supposed to.
 
I went with the polymer and install was pretty easy.

Having gotten used to the stock trigger, the polymer took some retraining of my finger. If you pull the trigger from the pad of your finger, it's fine, but shooting from the first knuckle it was a little tricky for me to engage the trigger safety lever.

After a couple hundred squeezes of dry firing, I got used to it and it doesn't bother me anymore. I like the Apex FFS kit a lot, and they make it feel like you got a whole new gun!
 
I cannot speak for the aluminum trigegr, but have the polymer FSS in my gun. It was a relatively simple installation and is a big improvement over the stock set up.
 
I have the poly trigger... I don't see it wearing out anytime soon.

The poly trigger is more contoured so it will be more comfortable to shoot with.
 
I've used the poly FSS trigger for about a year. I just changed my trigger to the new Flat Faced trigger and it's only available in aluminum at this time. Installing the pin into the trigger bar is a bit more fussy, in fact trying to tap it in with a hammer wasn't working. I had to press the pin into place with a bench vice. After that was done, no problem. Honestly I don't know if there is much difference between the two, I couldn't notice any flex with the poly trigger, both the triggers are smoothed out nicely and finished in black so from an appearance and feel aspect, they are pretty much the same. I do like the operation of the new flat faced trigger a lot more than the curved FSS trigger but it has nothing to do with the material (AFIK). I think they come out with the aluminum versions first because they can be machined out of billet stock and changes can be made easily. The polymer triggers require an investment die and are quite a bit more of an investment, especially if changes are made to the design. Hope this is helpful.
 

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The 2 main differences have already been mentioned... the pin on the aluminum trigger is an absolute pain with a capital P to drive into place... which is difficult enough already with needing to keep the hole in the trigger bar lined up with the pin as it moves into position.

The edges on the front of the poly trigger are rounded... a lot more comfortable for those that don't employ just the tip of their trigger finger to pull the trigger.

As for the staying power of a polymer triggers... remember that there are literally millions of pistols of different brands out there, (like Glock), with polymer triggers... have you heard of any concerns related to durability?
 
I just put the Aluminum FSS kit in my 9mm a few weeks back. I like it, but I actually wish I went with the Polymer - I like the curved feel of the stock trigger as opposed to the flat with edges of the Aluminum. I didn't realize it until after I bought it. Live and learn.
 
I have both on different M&P's. I shoot equally well with both. I preferred the aluminum one due to it be metal and I liked the flatter surface on it. The poly trigger is just as fantastic. This won't make your choice any easier but both are good improvements over the factory one.

If you are a shooter that puts your joint on the trigger, get the poly. If you are a middle of the finger pad shooter, aluminum.
 
The aluminum is working wonders for me and I couldn't be happier with it. Maybe some of my happiness comes from not having to get frustrated with installing it. (I had my gunsmith do it)
 
I did the straight aluminum fss kit too and found the toughest part was to finish nocking in the small 1/16" pin that came installed as the pivot for the trigger bar , all but the last 3/16" inch that is . That took a good whacking with my tiny brass hammer. The pivot pin went in nicely just had the normal fight with the trigger spring . Love the FSS trigger kit but not for CC with out having a safety too. Glad I have the safety .
 
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I did the straight aluminum fss kit too and found the toughest part was to finish nocking in the small 1/16" pin that came installed as the pivot for the trigger bar , all but the last 3/16" inch that is . That took a good whacking with my tiny brass hammer. The pivot pin went in nicely just had the normal fight with the trigger spring . Love the FSS trigger kit but not for CC with out having a safety too. Glad I have the safety .

Its fine for carry. My carry gun has a full duty/carry kit with the aluminum trigger. Zero issues.
 
I have the aluminum in both my 9mm. I also had them installed so no issues as far as that goes, other than the gun being at the shop for a bit.

I have both and prefer the aluminum. I had a gun smith do the install so that was not an issue.
 
Never tried the aluminum one but the polymer works just fine.

Polymer gun. Polymer trigger. Logical.
 
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