Best SIG MPX Accessories and Upgrades – 2020 Buyer’s Guide

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Finding the best Sig MPX Accessories and Upgrades can be a challenge. But if you know exactly what to look for, chances are the search process won’t be so difficult. If you are looking to add on to your Sig MPX or upgrade to something that is a step above the stock default, then you will probably want to find the right kind of accessories.

While a version of the Sig MPX is available to only those in law enforcement and military personnel, there is a semi-automatic version of this very firearm that is available to civilians. If you are one of either group and are looking to consider upgrading it for enhanced performance, there are eight accessories and upgrades that are available on the market. These are considered to be the best of the bunch (considering there are many accessories that flood the market).

Before we get to the list, let’s talk about the perks of getting these accessories and why they made the cut.

Comparison of the Best Sig MPX Accessories and Upgrades

IMAGEPRODUCT
  • Best overall Sig MPX Accessory or Upgrade
  • Made from high-quality, mil-spec steel
  • Nitride finish
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  • Runner-up for best Sig MPX accessory and upgrade
  • Made from high-quality polymer
  • Prolongs magazine life
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  • Best Sig MPX Accessory And Upgrade for the money
  • Ambidextrous design
  • Made from high-quality 7075 aluminum
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  • Best SIG MPX Barrel
  • Made from high-quality material
  • Drop-in design
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  • Best SIG MPX Handguard
  • Available up to 14 inches in length
  • Made from hard-coat anodized aluminum
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  • Best SIG MPX magazine
  • Made from high-quality polymer
  • Available in capacities up to 30 rounds
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  • Best SIG MPX Stock
  • Made from high-quality materials
  • Folding design
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  • Best SIG MPX Trigger
  • Two-stage design
  • Available in curved or straight shoe
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Perks of Getting a New Accessory or Upgrade For Your Sig MPX

You can enjoy all kinds of benefits when you choose an accessory or upgrade for a Sig MPX. It doesn’t matter if you are purchasing one or multiple accessories for the goal of making it stand out better in terms of performance and quality. Here are just a few perks that you can get out of these accessories that you’ll enjoy:

Better Reliability

If there is one thing that every single firearm on the planet must-have, it’s reliability. It doesn’t matter if you are using a firearm in self-defense or for the thrill of target shooting. It has to work exactly when you need it to. And jamming and malfunctions will not cut the mustard. Make sure that your accessories and parts (including the inner workings) are in excellent order before putting it to good use. Regular cleaning and maintenance will make it go a long way.

Better Storage

One of the accessories that we will be looking at is a stock. It is important to find a stock that will allow you to make your Sig MPX a lot more space-friendly rather than take up too much space. It doesn’t matter if you are placing it in the gun cabinet or if you are carrying it from the range to home in your vehicle. 

More Accuracy

While scopes are one accessory that may be responsible for an improvement in accuracy, it’s not the only one. There are some others like barrels and stocks that will play some role in your overall accuracy. You need excellent support by using a stock. You need a long enough barrel to determine the bullet’s velocity and accuracy. While it might sound all confusing, there are a good number of moving parts and accessories that play some kind of role in a firearm’s overall performance.

Why Did These MPX Upgrades Make Our List?

We did not choose each of these upgrades by complete random. We made sure that there was a certain characteristic or feature that stood out enough to make the list at the end of the day. Just as we did in making sure each upgrade makes the cut, we suggest you follow a similar approach in finding one for yourself. Here are some things to look for in an MPX upgrade:

Affordability

It doesn’t matter if you have money to play with or if you are on a budget. You will certainly find an upgrade or accessory that will fit your budget. If you are part of the latter group, then always take into consideration the quality and performance. What you need to look for is the best quality and performance that fits your budget. This way, you are not regulated to choosing anything that may be cheap and flimsy. 

Easy to Install

All of these accessories and upgrades are guaranteed to be easy to install or drop-in designs. That’s because installation should not be complicated (especially if you are fairly new to using a Sig MPX). Installation for whatever upgrade or accessory should take no more than a few minutes depending on what it is. Make sure you know which accessory you are definitely intent on purchasing before going forward.

Guaranteed to Be Reliable

As we’ve mentioned before, reliability is important. Every accessory has to function in a certain way each time you put it to good use. We have made sure that all of these accessories are proven to be reliable through a minimum of 100 rounds. If you want an accessory that will stay in working order through multiple shots and for years down the road, consider an accessory known to have the best quality.

Quick Take - The Best Sig MPX Accessories And Upgrades

Review of the Best Sig MPX Accessories and Upgrades

The following is a list of the best accessories and upgrades for a Sig MPX. As you go through each item, be sure to make any notes regarding the features and characteristics so you know what stands out as interesting to you. You may wind up choosing one or multiple upgrades even if the number one goal is enhancing the performance of your MPX. Let’s begin by taking a look at the first Sig MPX upgrade on our list -- the “best overall” choice:

Pros

  • Easy to install
  • Reduces recoil
  • Super durable
  • Great aesthetic design
  • Most users felt muzzle climb is non-existent

Cons

  • None

What Recent Buyers Report

A lot of new buyers say that this was a cinch to install. The fit and finish were perfect and the results were instantaneous. They were also reporting a decent reduction in recoil (most estimating north of 30% of it being reduced) with no muzzle rise. One user said that it was quite solid in quality and it doesn’t damage easily compared to an old muzzle brake that he previously purchased.

Why It Stands Out To Us

Muzzle brakes are considered to be one of the best accessories to rely on if you want to reduce any recoil or muzzle rise on any semi-automatic firearm. And this does a great job knocking down recoil and puts an end to muzzle rise in an instant. So it can definitely do you some good if you want your shots to be accurate and straightforward. Muzzle rise will ruin any kind of shot and will take it anywhere but your intended destination.

Who Will Use This Most

If you want an accessory that is designed to make sure that every shot counts, then you may want to give this a chance. All you have to do is fit it on quickly and be able to enjoy the benefits of better accuracy and being able to maintain complete control over your rifle. If you cannot control your rifle, how are you supposed to shoot straight?

Bottom Line

The Lantac Dragon Muzzle Brake could be the standout accessory for a Sig MPX. That’s because it’s got the durability and the ease of installation that takes it to a whole new level. You can forget about the muzzle rise or much recoil by the time you get this sucker installed. And it won’t weigh down your gun in any way. Lightweight and tough are two things you want to look for in a certain accessory.

Pros

  • Superior durability
  • Really light in weight
  • Makes loading the MPX a lot easier
  • Excellent in all kinds of weather conditions
  • Perfect for those who have a hard time with manual reloading

Cons

  • None

What Recent Buyers Report

Most of the new users were looking for something that would make their magazines easier to load and less taxing on hands. There were a good number of users who were older in age and dealing with mobility issues in their hands. One user said that it was easier for him to load his MPX with this rather than doing it the old fashioned way due to his arthritis. But he said that it worked like a charm each time.

Why It Stands Out To Us

If you love your MPX, you probably won’t get enough of shooting off so many rounds. Granted, this little accessory can stand out as your favorite if you are looking for something that will give you faster loading times (and something that might be even better for your hands). You’d be surprised by how many magazines you can load in a short amount of time compared to your bare hands. Whether you are dealing with joint issues or just want something quicker, you’ve got an accessory like this to get the job done.

Who Will Use This Most

This is an accessory that will come in handy if and when you need something that will make loading quicker and easier than anything else. It will be a lot easier for older users who just want to enjoy firing off as many rounds as possible. Don’t be shocked if you wind up putting this to good use for a long time due to its durability alone.

Bottom Line

The Lula 9mm Magazine Loader is high in quality and high in praise among most users who want a quicker and pain-free solution to loading their MPX. If you want something that will be easier for you rather than do something that is time-consuming, then you may want to consider putting this bad boy to good use.

Pros

  • Superior durability
  • Easy and fluid movements
  • Fits all kinds of MPX models
  • Affordable for most budgets
  • Fit and finish are perfect for most users

Cons

  • May not fit some hand sizes
  • Some lubricating may be needed prior to use
  • Installation may be a challenge for some users

What Recent Buyers Report

New users say that this charging handle was super durable and proved itself in being really reliable when allowing all the inner workings of the upper receiver to work together and provide a smooth, malfunction-free shot. One user said that the installation was quick and easy and no additional fitting had to be required on his end. So far, he isn’t complaining about the overall functioning of this charging handle.

Why It Stands Out To Us

Charging handles are one of the accessories you absolutely need at your disposal. Without them, they may be rendered useless. This is the kind of accessory that will allow the upper receiver and the lower to work together in providing a smooth, working MPX each time you pull the trigger. Like the bolt carrier group, it’s what makes the whole kit and kaboodle work so that the fire cycling is smooth and painless no matter what the application.

Who Will Use This Most

This will be a great accessory if you are looking for an upgrade that is affordable in price. But at the same time, you want something that will be guaranteed to last you a long time. This means you won’t need to deal with a charging handle that is easy to wear down or break. For a smooth shooting cycle every time you put your MPX to good use, this is the charging handle that will work to your advantage.

Bottom Line

The Next Level Armament Sig Sauer NLA Charging Handle is a much-needed accessory that won’t wear down, makes shooting a lot better and smoother, and won’t suck the life out of your bank account. You will definitely be able to keep your MPX running like a well-oiled machine by the time you install this. This little unit is nothing short of perfect when it comes to quality and performance.

Pros

  • Very durable
  • Easy to install
  • Different lengths available
  • M-Lok slots are great for customization purposes
  • Protects your hands from getting in contact with a hot barrel

Cons

  • Some fitting may be required
  • Loctite may be needed for additional security
  • Some accessories may not be compatible with M-Lok slots

What Recent Buyers Report

According to new users, they were able to fit this handguard on their MPX of choice. They said that their chosen length was a good fit and they were able to install it in a few minutes without any struggle. Furthermore, they said that they were able to customize the handguard with a few M-Lok compatible accessories that enhanced the MPX’s performance.

Why It Stands Out To Us

A MPX handguard does a good job of protecting your hands. Specifically, it prevents any hands from accidentally touching a hot barrel after you have gone through so many rounds at the range. After a period of time, your barrel tends to heat up a bit. And touching it afterward can really hurt like hell. Whether it’s unintentional or not, this handguard will prevent that from happening.

Who Will Use This Most

This is a great handguard for any user who likes to shoot off a whole ton of rounds at the range. You will be hard-pressed to find an accessory that will stand out as one of the go-to options if and when you need something that will give you a firm grip and better control. Of course, you want something that will prevent the unfortunate from happening.

Bottom Line

The Midwest Industries SIG Sauer MPX Handguard is durable, easy to install, and will definitely work to your advantage if you want nothing more than full control over your rifle. Once you tack this on, you can customize it and make it stand out even more in terms of performance. Find one that fits your length and you will be in business.

Best SIG MPX Magazine:
 SIG Sauer MPX Magazines

Pros

  • Easy to load
  • Excellent for multiple applications
  • Allows for smooth, reliable feeding
  • Really durable, if not indestructible
  • Works with most 9mm brands and designs

Cons

  • None

What Recent Buyers Report

A lot of new users were really pleased with the overall quality of the magazine. They said that it doesn’t break or malfunction if it ended up hitting the hard surface. Overall, the magazine had a range of 10 to 30 rounds available but was mostly used for casual and competitive target shooting.

Why It Stands Out

MPX magazines are typically one of your toughest accessories that you’ll find on any given firearm. It will provide you with plenty of firepower, but they are dang near indestructible from the inside and out. This magazine, in particular, is one such example.

Who Will Use This Most

This magazine will definitely be the go-to option for MPX owners who want plenty of firing power. No matter how many rounds you need, this is the magazine that will last you a long time. By the way, you should probably stock up on extras if you plan on putting this to good use at the range.

Bottom Line

If you want 10, 20, or 30 shots at your disposal you may want to consider the SIG Sauer MPX magazine that will make every shot available to you whenever you are at the range. Whether it’s for fun or competition, you’ve got a magazine that can last you a long time.

Pros

  • Solid construction
  • 2lb pull weight per stage
  • Trigger pull is not too light or too heavy
  • Drop-in design, takes minutes to install
  • Perfect for competition and casual target shooting

Cons

  • None

What Recent Buyers Report

New buyers found this trigger to be way lighter in pull weight compared to most of the stock triggers that came with their MPX. They said that by the time this was installed (which was less than 15 minutes), the trigger was easy to pull and shots were coming off fast and furious. One user said that he was able to get his shots off slightly quicker than his previous trigger while he was competing in a recent shooting event.

Why It Stands Out To Us

This trigger is a two-stage trigger that allows you to get a quick shot off without having to deal with any sensitivity or misfirings. The first stage will set up the second stage where you are able to squeeze the trigger with ease and be able to land as many shots as you need on target. If you want something that is high in quality and won’t give you any frustrations because of a heavy pull weight, you may want to consider putting this trigger to good use.

Who Will Use This Most

This will make an excellent replacement part for those who want a trigger pull weight that is miles ahead of a stock default (or any trigger assembly that allows for a heavy pull). Since it’s a two-stage trigger, you won’t have to deal with any accidental discharges in the process. If security and reliability are two things you look for in a trigger assembly, then this might be for you.

Bottom Line

If you want a trigger that will deliver excellent quality and a superior performance like nothing else, the Timney AR PCC Two-State Trigger may just be your cup of coffee. It’s high-quality, proven to be reliable, and can make sure that you are able to get a quick shot off at any given time no matter if you are casually or competitively shooting targets. Installing this in less than a few minutes and getting instant results will be exactly what you’ll get out of a trigger like this.

Pros

  • Excellent durability
  • Allows for superior accuracy
  • Takes a few minutes to install
  • Fits most MPX models like a glove
  • Light in weight, doesn’t add any additional weight to the gun

Cons

  • None

What Recent Buyers Report

New users say that the barrel was at the perfect length for them to make every shot as reliable and accurate from any given range. They said that installation was quick and easy and had no issues with 100 rounds of test shooting. One user said that it was much easier to clean compared to the last barrel that he used.

Why It Stands Out To Us

A barrel is certainly one of the more important accessories to any firearm. So if you need to replace your stock default with something that is smoother, lighter in weight, and can deliver an even better performance then you may need to consider this as one of your best options. It’s not too long or short by any standards. But it can deliver fast, accurate shooting more times over without leaving any damage behind. And yes, it’s easy to clean. You can take your favorite bore brush and leave no residue or debris behind.

Who Will Use This Most

This will be a great accessory if you are looking to make an upgrade to make your MPX a lot better in terms of accuracy and reliability. These two are always your top two attributes to look out for. If your shots are a little off, then some adjustments may be needed. If the barrel is a little slower than normal in velocity, it might be time to clean the barrel. If you can take good care of this barrel, it can take care of you no problem.

Bottom Line

The Sig Sauer MPX Caliber X-Change Kit is definitely your best option here if you want to look for a barrel that will work hard, make sure all your shots are straightforward and dead-on while making sure that it will last you a really long time. It’s lightweight, high in quality, and easy to install. Plus, it’s miles ahead of your stock default barrel no matter how you slice it.

Pros

  • Easy to install
  • Perfect for portability
  • Easy to fold and unfold
  • Super durable in construction
  • Won’t easily damage due to oils, solvents, or bad weather

Cons

  • None

What Recent Buyers Report

This stock is the real deal according to one user, and a whole bunch of other buyers can confirm it. They said that installing this literally took minutes and the folding (and unfolding) was quick and painless. The stock was purchased by those who were looking for something that allowed for easy transporting and space-saving storage. It was also a stock that did its part in reducing some recoil for Sig MPX guns.

Why It Stands Out To Us

The stock is considered to be another one of the many important accessories that stand out. If you want something that will allow your MPX gun a lot of room for storage, then you will probably want to consider the idea of purchasing a stock that will obviously have the folding ability. Just install this and you’ll be able to make your MPX more portable in no time flat.

Who Will Use This Most

This would be a great upgrade for those who don’t want to deal with fixed stocks. Because fixed stocks may cause some grief because of its inability to save you space. Plus, portability may be a major pain for you as well. If you want a stock that will be easy to use and easy to take care of when you are cleaning and maintaining your MPX, consider this one of your top options for a replacement stock.

Bottom Line

The Sig Sauer MPX/MCX SBX Folding Stock should be right up your alley if you are looking for something that might stand out as one of those “under the radar” accessories for you to install. If you are serious about giving yourself better support and control for your MPX gun, this could be something worth investing in.

What Do I Need To Know Before Buying?

It’s always a good idea to be well-informed about accessories and upgrades long before you even purchase them. So it’s important to know some additional information so you have a better understanding of what you can do with specific accessories and upgrades. Here are just a few things to know about:

You Can Purchase One or Multiple Accessories

What exactly do you need to upgrade on your Sig MPX? What are you looking to get out of the whole deal? If you have a good idea of what you want to improve, then it’s important to find the right accessory (or accessories). You can choose one or a couple of other accessories if you believe they will benefit each other and deliver the same intended improvement (i.e.--better accuracy would be best acquired if you purchased a stock and barrel to start off with). 

You Don’t Need a Gunsmith For Any Installation 

As we’ve mentioned before, most of the accessories and upgrades that are available are easy to install. This means you won’t need to waste money or time on a gunsmith doing the work for you. Why spend a ton of money and wait a while when the gunsmith himself might have some more important and complete installation project to deal with?

Stock Parts Are Not The End All, Be All

At some point, you are going to grow tired of the stock accessories that come with your Sig MPX. They may even be detrimental to your performance even from the first shot. It’s important to consider whether getting additional accessories for upgrading purposes even before getting an MPX yourself is appropriate for you. That way, it will save you time and potentially money. 

Conclusion

If you are planning on upgrading your Sig MPX for better performance, you may want to check out these accessories and upgrades for yourself. Make the determination of what you want to get out of your MPX and find the appropriate accessory that is right for you. 

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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