Best SIG MPX Triggers of 2020 – Complete Buyer’s Guide

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If you are looking for the best Sig MPX trigger, then you’re in luck. By the time you are finished reading through this article, you may have already found the trigger you want for a replacement or upgrade.

The Sig MPX is one of the best short-barrelled rifles that you can find for the purpose of civilian use, despite another version of it being used by law enforcement and military personnel.

We’ll be taking a look at the triggers that will be compatible for both civilian users of the semi-automatic MPX and the original model itself. If you are not sure of where you can find a trigger, consider the excellent options we've reviewed below. These are currently considered to be the best on the market. Before we get to the list, we’ll discuss the components of an MPX trigger and what makes them truly great. 

Comparison of the Best SIG MPX Triggers

IMAGEPRODUCT
  • Best overall Sig MPX Trigger
  • Available in curved or straight designs
  • Trigger pull weight is just two pounds
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  • Runner-up for best SIG Mpx Trigger
  • Total pull weight of 3.5 pounds
  • Made from high-quality material
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  • Best Sig MPX Trigger For The Money
  • Single-stage design
  • 4.5-pound trigger pull
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  • The best binary trigger for Sig MPX
  • Made from high-quality materials
  • Drop-in design
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  • Best Timney Trigger
  • Pull weight of 3 pounds
  • Drop-in for easy installation
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What Are The Components of The Sig MPX Trigger?

Some of the major components of an MPX trigger assembly include the housing itself, which includes the holding pins and springs that keep the assembly together and maintain the pull weight, respectively. Also included is the trigger itself (which can be a curved or straight design). Some components may include a spring that will allow adjustability for different pull weights.  

What Makes a Great Sig MPX Trigger?

If you want to make the distinction between a great Sig MPX trigger and one that is considered subpar in quality and performance, it’s important to know the characteristics and features that make a trigger stand out from the rest of the pack. Here are just a few things that make a great trigger:

Price

The price might be a factor for you in choosing a trigger, especially if you are looking for something that will be affordable for you in terms of quality and performance. Remember, finding the best quality that you can afford is a lot better than settling for something cheap and flimsy just to save some cash in the short term. 

Timney AR PCC Two-Stage Trigger

Reliability

Reliability is of utmost importance when it comes to finding the right trigger. You want something that will allow for smooth pulling and the ability to fire a shot quickly when you need it. Reliability starts with finding a trigger that is made from high-quality materials from the inside out. 

Ease of Installation

All of the triggers will be looking at will be drop-in designs. This means you’ll be able to install them easily in a matter of minutes. This way, you’ll be able to rely on the installation yourself rather than pay through the nose for a gunsmith to do it for you. Save yourself money and time and just do it yourself with a drop-in design.

Quick Take - The Best SIG MPX Triggers

Review of the Best Sig MPX Triggers

Below is a list of the Sig MPX triggers that are considered the best on the market. While reading through our reviews, you should consider taking notes of any characteristics and features that stand out. If you have an idea of what your ideal trigger assembly looks like and how it functions, those notes will come in handy in helping you find one that is close enough.

Let’s begin by taking a look at the first trigger on our list -- our “best overall” option:

Pros

  • Reliable; won’t jam or malfunction
  • Easy to install; only takes a few minutes
  • Trigger pull is smooth and not grainy
  • Perfect for target shooting and competition
  • Pull weight is light enough to get quick shots off

Cons

  • None

What Recent Buyers Report

A lot of new users say that they were able to install this in a matter of a few minutes. Once installed, they tested it out at the range and managed to get off quick shots from various distances. One user said that he expected the trigger pull to be slightly heavy at the second stage, but got quite the surprise when it was a bit lighter than expected.

Why it Stands Out to Us

This is a two-stage trigger that has a weight of two pounds at each stage. This means you will be able to easily go through both stages and be able to get a shot off quickly. The lighter the pull weight, the faster you’ll take a shot. This will always come in handy when you are in a situation where you need to keep yourself ahead of your competitors.

Who Will Use This Most

If fast shooting is what you are looking for, you’re going to get exactly that with this trigger. All you have to do is install this and you will instantly get results. Quick shooting, a light trigger pull overall, and extra security to prevent misfires are what this trigger will deliver.

Bottom Line

The Timney AR PCC Two-Stage Trigger states its case as to why it deserves the “best overall” nod. It’s got the high-quality toughness and the light pull weight that will make target shooting a lot more fun. Whether it’s for killing time or keeping yourself ahead of the competition, this trigger will definitely stand out among the rest.

Pros

  • Excellent quality
  • Simple installation
  • Consistently light trigger pull
  • Perfect for target shooting and competition shooting
  • Two-stage allows for better security to prevent misfires

Cons

  • None

What Recent Buyers Report

New users were happy with this trigger overall. The installation was easy for most users and the pull weight was light on both stages. One user said that he was able to get an instant improvement in his Sig MPX with the installation of this trigger. He was also able to put the light pull weight to good use when he was using it at a recent competition and that it certainly kept him ahead of the curve.

Why it Stands Out to Us

This trigger also has a two-stage setting with a light trigger pull on each stage. This is perfect if you are looking for something that will give you a quick shot through and through. With a crisp, no creep trigger pull each shot feels just as smooth as the next. This will come quite in handy when you want to be quick with every shot. If you want a trigger that is flawless in functionality and delivers on the promise, this is it.

Who Will Use This Most

If you are looking for a trigger that will make target shooting fun or keep you safe in high-stress tactical situations, this trigger will certainly be the no-brainer choice. This trigger allows for a crisp follow through and is no slouch when it comes to quality and performance.

Bottom Line

The Geissele Automatics SSA-E Trigger will certainly come through in the clutch in a tactical or target shooting situation. Whether you are a competitive shooter or a member of law enforcement who faces dangerous situations on a regular basis, this trigger will certainly give you the best pull weight and follow-through you can find on an MPX trigger. Expect this runner-up option to be in contention for the “best overall” position in the near future.

Pros

  • Simple installation
  • Trigger break is really crisp
  • Affordable for most budgets
  • Perfect for tactical purposes
  • Trigger pull is light enough to get a quick shot off

Cons

  • Fitting may be required
  • Some creep has been reported
  • Some say the trigger pull might be a little too heavy for their liking

What Recent Buyers Report

Most new buyers say that this trigger was perfect for the use of self-defense and even target shooting purposes. About half of the new users were law enforcement personnel that were using their MPX for tactical applications. In a training session, one user said that the trigger pull was light enough to get a shot off (especially in a run and gun situation). He added that this trigger has a crisp break and no grittiness; it felt smooth and the follow-through was perfect.

Why it Stands Out to Us

This is no ordinary budget trigger. In fact, the quality is probably a lot better than you’d expect from any trigger that has an affordable price tag. Its straightforward design makes shooting not just quicker, but also ergonomically friendly. If you want to shoot rounds for a long time without a single instance of strain, this trigger just might be your huckleberry.

Who Will Use This Most

If you are looking for a trigger that delivers smooth, quick shooting without it sucking the life out of your bank account then this could be the no-brainer option. You get excellent quality, smooth functionality, and a price tag that cannot be beaten. Whether it’s an upgrade or something that you want to add on to an MPX building project, this trigger is designed to deliver the results you are looking for.

Bottom Line

The KE Arms SLT-2 Sear Link Technology Trigger is the real deal when it comes to delivering above and beyond expectations. If you think you’re going to get cheap and flimsy out of a trigger like this, you’d be quite mistaken. Rather, you get the best quality and performance money can buy for your Sig MPX.

Pros

  • Easy installation
  • Perfect for target shooting
  • No trigger grittiness or creep
  • Users found Binary mode very fun to use
  • Trigger pull weight is decent; not too light or too heavy

Cons

  • Some say it’s a bit overpriced
  • Installation directions are hard to understand
  • Safety selector has a cheap and flimsy feel to it

What Recent Buyers Report

Most new users were seriously impressed with this trigger’s ability to allow users quick and easy shots in almost any application where a Sig MPX was used. Many use it at the range for target shooting purposes while some others use it for competitive shooting. The binary mode allowed for quick single shooting that made it perfect for beginners looking to hone their accuracy and precision from various ranges.

Why it Stands Out to Us

Binary mode is where you are able to fire one shot rather than multiple shots at once. This will be an excellent mode to put to good use if you want to slow things down a bit and take it one shot at a time. This is the perfect trigger for anyone that is new to using a Sig MPX. Shooting it with multiple rounds going off might be intimidating at first, so you can consider shooting in binary mode to be the “training wheels” mode. Once you get the hang of it, you can switch to full blast.

Who Will Use This Most

This would be excellent for newbies and seasoned users of the Sig MPX. Even if the binary mode is a better mode for beginners, this trigger will give you the option to choose your firing style so you can make every use enjoyable. You’d be hard-pressed to find a trigger like this anywhere else on the market, especially when it gives you the ability to choose between two firing modes.

Bottom Line

The Franklin Armory BFSIII AR-C1 Trigger might be a dark horse candidate for gaining the “best overall” spot based on some of its cool features. You can install this puppy and be able to enjoy firing off a single shot or more depending on the mode you set it too. If you want a trigger that would be a phenomenal addition to your MPX, don’t count this one out.

Pros

  • Easy installation
  • Ergonomically friendly
  • Perfect for target shooting
  • Excellent smoothness and crisp breaks
  • Light trigger pull weight gives way to quick shooting

Cons

  • Trigger pin may slide at times
  • Some say the fit might be a little too tight
  • Some have had issues with some of the smaller parts during installation

What Recent Buyers Report

As expected, the majority of users were not disappointed in this trigger. Installation was a breeze and once it was installed, they enjoyed a trigger pull that was ergonomically friendly and managed to make all-day range shooting a lot more comfortable. One user said that this trigger was a godsend since his last one strained his trigger finger after an extended range session.

Why it Stands Out to Us

Timney is known for making some pretty awesome triggers. This one is no exception. It’s got the high-quality materials that work together to ensure smooth, consistent functionality every single time you use it. On top of that, it is a single-stage trigger that will make sure every shot is taken quickly and without any jamming or malfunctioning. When all the inner parts of this trigger work together, you can expect this sucker to be silky smooth.

Who Will Use This Most

This will be perfect as a starter model for beginners. It’s affordable and it’s easy to install and operate. If easy is what you are looking for and you are new to the whole MPX shooting thing (and don’t mind a little rapid-fire), then this would be an excellent trigger for you.

Bottom Line

The Timney AR PCC Single Stage Trigger is no cheap or flimsy trigger by any stretch of the imagination. Even though it is certainly one of the more affordable options, it can give you smooth and quick shooting without having to rely on a gunsmith to install the thing for you. By the time you install this, you’ll want to get in on the action by firing off a bunch of rounds.

Advantages of Investing in a Quality Sig MPX Trigger

If you really are considering the idea of buying a quality Sig MPX trigger, then be ready to enjoy the advantages that you are going to get out using one. Once you install one on your MPX, you might notice them almost instantly. Here are some of those advantages:

Quick Shooting

Of course, we cannot stress this enough. Most of the quality MPX triggers that you’ll find will allow you the ability to quickly get a shot off. One of those requirements is making sure that the trigger pull weight is light enough. The lighter the trigger pull weight, the better the chance you can fire a shot with the perfect timing and enjoy quicker follow-up shots as well. 

Consistent Reliability

Quality and reliability go hand in hand. That’s because high-quality parts are less likely to break or wear down after short term use. You can count on a trigger of excellent quality to give you consistent pulling ability without a single instance of jamming or malfunctioning. 

Built For The Long Haul

What if you want to spend the day at the range? What if you want to “take it into overtime”? Well, these triggers are built to handle consistent pulling and allow for better ergonomics. The last thing you want is to deal with a sore trigger finger due to strain after spending hours on end shooting off your MPX. 

Conclusion

The best Sig MPX trigger for you could be one of the options reviewed above, and you will get nothing less than excellent quality and reliability out of them. Just choose one to install on your MPX and you will be ready to take on the applications that will be the best fit for it. Whether you are a target shooter or defending our communities, the MPX is a superior short-barreled rifle that can certainly rise to the challenge. 

About Josh Lewis

Josh Lewis the managing editor at Gun Mann and when he isn't writing about guns he is more than likely tinkering with them. He also enjoys hunting, fishing and spending time outdoors. As a lifelong gun owner he knows his stuff!

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