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Sig P320 Flat Trigger vs Apex

If you have a Sig P320 and you’re looking to upgrade the trigger, you will most likely compare the Sig P320 flat trigger vs Apex.

Apex Tactical is a company that got its start doing custom pistol work and is most well-known for its Smith and Wesson M&P triggers. 

Sig P320 Flat Trigger vs Apex front faces of triggers

They were the first company to make an aftermarket trigger for the Smith and Wesson M&P. At a time when the Smith and Wesson M&P had a horrible factory trigger. An aftermarket trigger was considered a necessity. 

When the Sig P320 was introduced, it did not have an option for a flat trigger. 

Now Sig is shipping multiple models with their flat trigger. If you have a Sig P320 without a flat trigger, you can upgrade to the flat trigger. You can buy the trigger directly from Sig. We will compare the Sig P320 flat trigger vs Apex flat trigger and see how they stack up.

Trigger Shoe Shape

Both of these triggers have some similarities. The most significant similarity is going to be the angle at which they sit. Both of the triggers will sweep somewhat forward. They sit at a similar position in the gun. These triggers have the same length of pull from the back of the Sig P320 grip. The width of the trigger shoes is also very similar. That, though, is where the similarities end.

Sig Flat-Faced Trigger Shoe

The Sig P320 flat trigger looks a lot fatter if you look at the trigger shoe from the side. 

It extends more towards the back of the gun. Even though this area behind it is hollowed out, it does make the trigger look much more substantial.

It does change the feel of the trigger on your finger and how your finger contacts the trigger face. The edges of the trigger are rounded, but there’s still a little bit of a sharp feel to it. 

Sig P320 Flat Trigger vs Apex Sig Trigger Front Face

For myself, this is not an issue as the middle of my trigger finger impacts ideally in the middle of the trigger shoe. If you have shorter or longer fingers, you might find those edges a little uncomfortable. 

There’s also a hook at the very bottom of the trigger shoe. This hook is very slight, and it’s not going to cause any discomfort like some designs may for people with larger hands. The way my trigger finger impacts the trigger’s face doesn’t touch the hook.

Apex Flat-Faced Trigger Shoe

The trigger shoe on the Apex trigger is much narrower. When you look at it from the side, you’ll see that it’s much thinner. It also has much more rounding on the edges of the trigger shoe itself. So, if you have larger hands that will end up placing the pad of your finger more to the side of the trigger. 

This trigger may be slightly more comfortable than the trigger shoe on the Sig. 

Sig P320 Flat Trigger vs Apex Apex Front Front Angle

Another thing to mention is the hook at the bottom. This hook extends further up the Apex trigger than it does on the Sig trigger. For myself, I can feel it. It makes the trigger feel like it’s not so much of a flat-faced trigger. Instead, it’s more like a curved trigger. It doesn’t bother me, but it’s not something I love either. 

I prefer the shape of the Sig P320 flat trigger vs Apex.

Trigger Takeup

Taking up will be a factor that many people are going to care about. Many people like a very short take-up. Others prefer a mushier take-up that gives them a little more margin for error.


The take-up on the Sig P320 is very minimal. 

You’re going to fill it right as you come into place with the trigger. It’s only around a 10th of an inch or less. There isn’t much there.


The trigger take-up on the Sig P320 Apex trigger is even slighter than the Sig P320 factory trigger. This take-up is minimal, maybe around half of a 10th of an inch. I know this seems like very little. It is, and once you get there, you’re going to feel a rigid wall once you get through that slight bit of take-up.

Trigger Break

The trigger break on this is where you’re going to start noticing the difference between these two designs. 


Once you’ve taken out the take-up on the Sig P320 flat-faced trigger, you’re going to start to feel just the slightest bit of creep.

Sig P320 Flat Trigger vs Apex Sig Trigger Hook Side

Then it’s going to move into a rolling break. This break is very slight. If you pull the trigger slowly, you’ll feel the creep, but at the same time, it has a nice rolling break. I’m a big fan of a rolling trigger break. So I like the way the Sig P320 trigger feels.


On the Apex, you’re also going to feel a little bit of creep in the trigger.

You’re going to feel far less creep than you do with the stock Sig P320 trigger. The Apex trigger has almost no creep when you go into a hard wall. 

Sig P320 Flat Trigger vs Apex Apex Trigger

Once you fill that wall, the trigger almost immediately breaks. It snaps like a carrot. It’s not quite a glass break, but it is a carrot break. 

There is a solid wall in this Apex Sig P320 flat-faced trigger.


The resets on these triggers are also going to be quite a bit different. You’re going to notice the most significant difference between these triggers regarding the trigger break and the reset. 


On the Sig P320 factory flat-faced trigger, you’re going to feel a very mushy reset. 

The trigger itself resets slightly into the take-up zone. Again, it resets right in front of the portion you’re going to feel right after the take-up.


Your reset is going to be almost the same position as the Sig factory trigger.

The only difference it’s going to feel much more authoritative. These triggers have a very soft reset, but the Apex fills more definite when it resets. 

You’re going to hear an excellent solid click on the Apex. You’ll also hear that click on the Sig, but it won’t feel as positive as it does on the Apex trigger.


Both of these triggers retail, right at $50. 

If you have one of the Sig models that includes a flat face trigger, you’re going to have to pay an extra $50 for the Apex. 

At the end of the day price, isn’t going to make a difference in which trigger you’ll buy or installing in the gun unless your gun already has a factory Sig flat-face trigger. For myself, I don’t see the extra money as being worth it. 

Final Thoughts

I prefer the Sig trigger’s rolling break, while my buddy Michael of Lynx Defense likes the more definitive characteristics of the Apex trigger. 

Sig P320 Flat Trigger vs Apex Rear of Triggers

If you prefer a rolling brake, get the Sig P320 flat-face trigger. Whereas if you prefer a decisive break, buy the Apex. Both of these are good triggers.

I don’t think you’ll go wrong with either one, but don’t expect a 1911 quality trigger out of either of these.

One Reply to “Sig P320 Flat Trigger vs Apex”

  1. M.K says:

    Old technology.
    – dual adjustable
    – 2 different shapes
    – 6 finishes each
    – 12 different variants

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