Can anyone explain the AEK kit vs. FSS kit? - MP-Pistol Forum

Can anyone explain the AEK kit vs. FSS kit?

This is a discussion on Can anyone explain the AEK kit vs. FSS kit? within the MP Talk forums, part of the Smith & Wesson MP Forum category; I'm in the market for poly 9mm and I'm deciding between. The g34 and the M&P Pro. My deciding factor is what offers better after ...


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Old July 15th, 2016, 08:54 PM   #1
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Can anyone explain the AEK kit vs. FSS kit?

I'm in the market for poly 9mm and I'm deciding between. The g34 and the M&P Pro. My deciding factor is what offers better after market triggers. I've always been a 1911 fan, so the closer I can get a trigger to that feeling, the happier I'll be. This gun is strictly a range gun, no competing on the horizon.

So can anyone explain the Action Enhancement Kit vs the Forward Set Sear flat face trigger kit? Which one (or combo of each) would get me closes to a 1911 (ideally in that 2.5-3lb range for weight and minimal travel with crisp break).
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Old July 16th, 2016, 04:51 AM   #2
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Welcome to the forum.

Yeah, the Apex site really is the pits with the product descriptions, isn't it? I can tell you what I found with mine.

I put the flat faced FS trigger (and innards) into my M&P and I found that it moved the trigger forward, as the name implies. For me that was a bad thing. So I removed the trigger itself, leaving the innards, and that got the trigger placed where it should be for my small hands. I don't have a gauge to measure the force required to break the trigger, but it's a nice trigger. The parts also moved the reset closer to my palm. All good things for me. But it's not a 1911 trigger. When I dry fire my 1911s it's like returning to trigger nirvana. The FSS is more of a competition trigger, and IMO, not something you'd want in a carry gun because the trigger is just too light. Yes, there are armchair commandos who will argue about that.

OK, now to getting it like a 1911... That'll never happen. It simply can't happen due to the nature of a striker fired gun. Things happen in the trigger press of a striker fired gun and it's not just releasing the sear that occurs. Then there is that long linkage to contend with. While I like the M&P, it fits me, and has plenty of aftermarket parts for competition, you might want to look at a different gun whose trigger is more "1911 like". But understand that a 1911 is a 1911. A SA Browning P35 does have a trigger like a 1911 once the mag safety is removed. I think they sold a DA P35 for a time, but it's just a foggy memory and I could be wrong on that. I never had an interest in one and for me it was as though they never existed.

In striker fired guns the VP pistols are quite good, and I wish I could remember the Walther gun that has a really nice trigger, but I can't. I'd go to a well stocked dealer and explain the situation to them. Don't settle for something you don't want, but look around. You might also discuss it with a knowledgeable gunsmith to see what a good one can do for you once the gun is bought. I don't mean someone with a set of punches and a hammer who calls himself a gunsmith, but a real honest to goodness gunsmith.

The AEK is similar to the FSS in that it makes the action of the gun better by giving it a better reset and a smoother action. But it's designed for carry and actually increases the force required to break the trigger over the stock springs by 1 pound. Again, it's designed for carry. In my EDC gun I used the Apex parts, all except for the springs. I kept the OEM springs and used the other parts . It resulted in a better trigger and possibly one a bit lighter in feel than "out of the box" because it was a hair smoother. But it's no 1911; neither is my competition gun even with it's better trigger than my EDC gun has.
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Old July 16th, 2016, 06:29 AM   #3
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I had the DCAEK in my Shield and a flat faced FSS trigger kit in my M&P PC. I found that the DCAEK reduced over travel in my Shield by about 25%. The FSS kit in my M&P PC reduced over travel significantly more. I liked it so much that I swapped out the DCAEK in my Shield for a flat faced FSS trigger kit. The kit makes the trigger much smoother and break much crisper. Is it like my 1911? Nope but close. I also recommend the RAM for a more audible and tactile reset.

Using all parts in the kits but retaining the factory trigger return springs, I measure around 4lb trigger pulls. I also like the more consistent pulls with the flat trigger. Some additional work such as polishing, trigger bar adjustments, and/or competition springs should get you lower trigger pull weights.

Since it's stated this is a range gun, I see no issue with using the flat faced FSS trigger kit and lightening it more. I've been carrying 4lb triggers in my EDC for years and have no qualms about light pull weight triggers. However I train regularly to keep my finger off the trigger and the safety on unless I want to fire. I can see ADs/NDs resulting from lighter triggers with no safeties and owners who don't train frequently enough.

Last edited by kilyung; July 16th, 2016 at 06:31 AM.
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Old July 16th, 2016, 12:52 PM   #4
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The pistol I shoot most often in IDPA, and when taking advanced training, is an M&P9 with a trigger pull of just under 2 1/2 pounds. I haven't experienced an "unintentional double tap" since the first range trip with it, and I've been shooting it for over two years now.

My carry M&P9 has a pull of about 3 3/4 pounds, and my carry 9c has a 3 1/2 pound pull. I'm fine with these weights for carry, as several of my 1911's have trigger pulls of less than four pounds.

I kept the stock triggers in all of mine, and used various other Apex parts to get the trigger pulls and resets that I wanted in my M&P's.

Last edited by Rick M; July 16th, 2016 at 12:54 PM.
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Old July 16th, 2016, 06:10 PM   #5
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Welcome to the Neighborhood!

The Apex FSS Trigger Kit is what you're looking for. The AEK is for competition shooting. The FSS will give you as close to a 1911 feel as is possible at the moment in an M&P pistol.

I have this setup in my Pro Series .40. Try it, I don't think you'll be sorry! Hope this helps!
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Old July 17th, 2016, 05:09 AM   #6
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I must be confused. What was I thinking of? I thought that the AEK was for duty/carry.

Very sorry if I mislead Winny94.

I see my error. I was thinking DCAEK. I see that there are 2 AEKs.

Last edited by BrianK; July 17th, 2016 at 05:18 AM.
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Old July 17th, 2016, 12:31 PM   #7
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Quote:
Originally Posted by BrianK View Post
I must be confused. What was I thinking of? I thought that the AEK was for duty/carry.

Very sorry if I mislead Winny94.

I see my error. I was thinking DCAEK. I see that there are 2 AEKs.
Yes; DCAEK for duty/carry, and CAEK for competition.
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Old July 18th, 2016, 01:49 PM   #8
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I assume you refer to a 5 inch pro vs. the G34.

Pro is the winner.
Better trigger
Legal on IPSC Production
Cheaper
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