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

by

GunMann is reader-supported. When you buy through links on our site, we may earn an affiliate commission.

Are you looking for the best Sig MPX stock? If the answer is yes, then you are not alone. Finding the right kind of stock for an MPX gun is going to be your mission here.

However, with so many of them flooding the market, this mission can be kind of difficult. You may know what you want and know of the purpose that it serves. But what if you wanted something a little extra, like better space-saving or storage? What about eliminating as much recoil as possible?

We’ll get right into all of this later on. If you are looking for a Sig MPX stock then be sure to check out the excellent options that we’ve handpicked for review. Before we get to our list, we’ll talk about whether or not all stocks are the same and how you can choose one for your own personal use.

Comparison of the Best SIG MPX Stocks

IMAGEPRODUCT
  • Best overall Sig MPX Stock
  • Made from high-quality materials
  • Folding design for better space and storage
View Latest Price →Read Customer Reviews
  • Best Overall
  • Made from high-quality polymer
  • Minimalist design
View Latest Price →Read Customer Reviews
  • Collapsible design
  • Best Sig MPX Stock for the money
  • Designed from high-quality polymer
View Latest Price →Read Customer Reviews
  • Best telescoping stock
  • Designed from high-quality aluminum
  • Features three different lengths of pull
View Latest Price →Read Customer Reviews

Are All Stocks The Same?

The short answer: no. There are a few reasons why they are not the same, despite serving the same purpose of providing you with additional support while shooting your MPX. For one, there are different types of stocks that exist on the market. Some of them will be adjustable to ensure an appropriate length of pull while there will be others that can easily be taken apart for the purpose of better storage space. Also, some stocks will be fixed, therefore determining a length of pull that won’t be changed. 

How to Choose a Stock For Your SIG MPX

Knowing which characteristics and features are essential for a quality Sig MPX stock is very important. So is knowing how to distinguish a great stock from one that offers disappointing quality and performance. While looking for a stock, you need to keep your eyes peeled for a few things:

Price

Indeed, the price tag will be one of the things to look for. However, you may want to consider the quality and the overall performance to be a higher priority before making a decision. Try to find the best quality that you can afford. If the stock is of excellent quality and the price tag is reasonable enough for you, then chances are you can consider it a winning choice. This is a whole lot better than getting stuck with a junk stock because you wanted to save some extra cash.

Ease of Installation

Every stock that we have added to the list does not require complicated instructions on how to install it. These stocks should take you no more than a few minutes and the right kind of tools to ensure that they are installed properly. Remember, these are drop-in types (which means easy installation without the need for a gunsmith). 

SIG Sauer Minimalist Plus Polymer Folding Stock

Durability

All of the MPX stocks you’ll see on this list are made from high-quality materials. This means they will be really durable and will last you a long time. Be sure to find one that you know will last for a long time so you won’t have to end up changing them out every few years or so.

Adjustability

Do you want something that is adjustable or something that is fixed? This will depend on your personal needs. If you want something where you can adjust the length of pull, obviously you need to go down the route of getting an adjustable or even a collapsible stock. If you are comfortable with a specific length of pull, then you may want to consider a fixed option.

Quick Take - The Best SIG MPX Stocks

Review of the Best Sig MPX Stocks

Below is a list of the best Sig MPX stocks on the market. In order to find the one that stands out the most to you, please consider taking notes in terms of the features and characteristics that seem attractive to you. This will help you figure out what you are looking for in an ideal MPX stock. Now, let’s start off with the “best overall” choice:

Pros

  • Very lightweight
  • Great deal of recoil reduction
  • Easy to fold and unfold
  • Allows for excellent support
  • Perfect for storage and easy transporting

Cons

  • None

What Recent Buyers Report

According to new buyers, this stock was pretty light in weight and didn’t add any additional weight to the gun itself. They praised it for being easy to deploy and easy to fold for space-saving storage and transportation. One user said that he was able to transport this in his truck discreetly without attracting any undue attention. He says that storing it discreetly in his vehicle was a lot better than leaving it out in the open.

Why it Stands Out to Us

This folding stock is known for making every use comfortable and for making storage a lot easier. Made from high-quality polymer, which is perhaps the strongest type of material you can find, it’s a whole lot better than your standard wooden rifle stocks. It is impervious to abuse, oils, solvents, and bad weather.

Who Will Use This Most

Expect this to be a great stock for those who are looking for something that will fold and unfold quickly. If you want to save space, whether it’s in a vehicle or in a gun safe, this stock will make sure that all of your bases are covered. For a really tough, lightweight, and minimalist design, this stock is the real deal.

Bottom Line

If you want a folding stock that is tough to the max, this Sig Sauer Minimalist Plus Polymer Folding Stock will certainly be a surprise to most users. How can a minimalist, bare-bones looking stock get to be this strong? Well, polymer can certainly go a long way when it comes to strength and longevity.

Best for the Money: 
SIG MPX/MCX Stabilizer

Pros

  • Super lightweight
  • Simple installation
  • Super sturdy and durable
  • Affordable for most budgets
  • Easy to adjust for a better length of pull

Cons

  • Some fitting may be required
  • Adjustments may be stiff at times for some users
  • Buttpad for better recoil and shock absorption should be included

What Recent Buyers Report

New users say that this was best used to stabilize their MPX while they were able to fire off many rounds at the range in a casual or competitive setting. The construction was super solid and it allowed excellent control for most shooters. One user said that since putting this to good use, he hasn’t ever had so much fun firing off his MPX; he last fired it with a factory stock that didn’t seem to cut the mustard.

Why it Stands Out to Us

A stabilizer is certainly something worth giving a whirl for the purpose of making sure that all of your shots are straight and on target. If accuracy is something that you hold to greater importance, then you’d be hard-pressed to find something quite like this anywhere else on the market. It’s made from high-quality materials that do a good job of absorbing shock and reducing as much recoil as possible. Other than that, you can install this no problem on your MPX or MCX and be able to fire off shots with smoothness, precision, and accuracy.

Who Will Use This Most

If you want a stock that might be the closest you can get to a starter model, then you may want to consider this one as your go-to choice. You may be familiar with the MPX stock and want something that might be a bit tougher than your current stock, but don’t care whether or not if it’s designed for budget shoppers. Either way, this bad boy is tough and easy to install.

Bottom Line

The Strike Industries Stabilizer is an affordable but proven solution for those looking for accuracy and stability with their Sig MPX. All you have to do is install this and you will have total control over your own gun while you are on the range or somewhere out in the field. You will definitely make the most of using your MPX with a stock like this. For less recoil and better ergonomics, this stock might be right up your alley.

Best Folding Stock:
MPX/MCX M4-Style Folding Stock

Pros

  • Simple installation
  • Great ergonomics
  • Easy to fold and deploy
  • Allows for stable, accurate shooting
  • Designed for casual and competitive target shooting

Cons

  • Some fitting may be required
  • Adjustments may be stiff at times
  • Gun cannot be fired while the stock is in the folded position

What Recent Buyers Report

As expected, a lot of new users were satisfied with this stock’s folding and deploying ability. It was easy to carry their MPX guns from home to the range (and vice versa). One user said that he found this as a replacement for his fixed stock that didn’t give him a good length of pull (or any storage space whatsoever in his gun safe). He said that the installation for this stock took him a few minutes and it was much lighter on his shoulders when shooting.

Why it Stands Out to Us

This is designed to not just give you all the storage space and easy portability you are looking for, but also to allow for excellent ergonomics. This means that you are able to make shooting really comfortable for you while getting a reliable hold on your MPX. You can assume the firing position and not worry about straining yourself while using your gun during a long shooting session at the range.

Who Will Use This Most

If you are looking for a folding stock that is friendly to newbie users of the Sig MPX, then you are in luck. Yes, it’s easy to install and it will give you excellent control so you won’t have to worry about any recoil throwing off your shots. You’d be hard-pressed to find a stock that is so high in quality and easy to fold or deploy anywhere else.

Bottom Line

If a folding stock is what you really want, then you’ll get one of the best in its class out of this MPX stock from Sig Sauer. Sometimes, even the best stocks of its kind come from the factory itself. That said, it is certainly a step up from the factory defaults that prove themselves to be much more of a disappointment than an asset.

Pros

  • Super sturdy in quality
  • Perfect for newbie users
  • Reduces recoil dramatically
  • Installs in just under a few minutes
  • Adjustable for different lengths of pull

Cons

  • None

What Recent Buyers Report 

Several new users have claimed that putting this stock to good use was the best decision they have made. They purchased this as a replacement for default stocks and even fixed stocks that didn’t fit them perfectly. They were able to make the adjustments needed to find out which length of pull served them best. Overall, there hasn’t been a single complaint about this stock’s overall fit, adjustments, and comfort.

Why it Stands Out to Us

An adjustable stock might be exactly what you are looking for if you are in search of a stock that will make using MPX guns a whole lot more enjoyable compared to fixed stocks. If you are tired of struggling with the wrong length of pull, then you know it’s time to find a stock that will replace your current one.

Who Will Use This Most

This will be a perfect stock for anyone who is new to the Sig MPX. If adjustments are what you want, you’ll get it out of this stock. It’s always a great idea to make sure that the stock you select can go above and beyond what a fixed stock can do. You deserve something that will give you a better length of pull and better control over your rifle.

Bottom Line

The Sig Sauer Aluminium Collapsing/Telescoping Stock might be just what you are looking for if you want easy installation, fluid adjustments, and complete control over your rifle at any given length of pull. It’s lightweight, sturdy, and will certainly give you the best support possible.

Pros

  • Fits most MPX guns
  • Excellent durability
  • Allows for recoil reduction
  • Easy to assemble and disassemble
  • Better support and comfort compared to some stocks

Cons

  • None

What Recent Buyers Report

New users say that this stock was easy to install in a matter of minutes. Once it was tacked on, they were able to get a good amount of recoil reduction and users noticed their shots were straightforward and dead on the money. One user said that he purchased it since his old stock was a fixed design that didn’t allow any easy adjustments.

Why it Stands Out to Us

A folding stock is perfect for when you need to store your SIG Sauer MPX or transport it from one place to the next. You can bring it from home and transport it to your local shooting range or somewhere out in the field. Its purpose is to make sure that you have plenty of space saved so it won’t take up too much room. When in the unfolded position, it will give you solid comfort and the ability to gain control over your rifle with less recoil.

Who Will Use This Most

This is perfect for those who are looking for a good stock that will be easy to fold (and unfold). You can fold it and make sure that you have plenty of space left over to store any other guns you may have in your cabinet (or whatever else you need). Transporting it might be a lot easier with this stock compared to fixed stocks, but you better believe it will work to your advantage each time you take your MPX to the range.

Bottom Line

The Sig Sauer MPX/MCX SBX Folding Stock Kit has provided a strong case as to why it’s the best on the market. It’s solid, easy to fold and deploy, and is perfect for all of your transportation needs from home to the range and back. It’s no slouch when it comes to giving you all the support you need for all kinds of applications.

Pros and Cons of a Sig MPX Stock

Let’s discuss some of the aspects of a new stock that you might not have thought about at first:

Pros

Knowing the common advantages of the Sig MPX stock is key if you are searching for the best of the best. This way, you’ll know what to expect before purchasing one for your own personal use.

Easy Installation

Obviously, we begin with the ability to install. You can take about a few minutes out of your day and with the right kind of tools be able to tack this onto your Sig MPX. This means that you won’t have to rely on a gunsmith to install this for you, thus saving time and a whole lot of money.

Consistently Reduced Recoil

Most of the stocks that will be installed for a Sig MPX will play a role in reducing recoil. This means you will be able to shoot more accurately and with more stability compared to a regular stock that won’t even bother absorbing the shock from recoil. Recoil and muzzle jump are two things you want to avoid; otherwise, your shooting will suffer.

Excellent Stability

The intent of a stock is to make sure that you keep the rifle stable while you are shooting. It should allow you to provide overall support while being able to lock on your shots at any given place on your targets. Plus, the stock comes in handy when you want to rest your cheek on something while you are concentrating on what you are shooting at.

Cons

With the pros come the cons. You shouldn’t let these discourage you from purchasing one of the stocks listed above; these are just a couple potential issues you should be aware of.

Some of Them Won’t Be Adjustable

Unfortunately, there will be some stocks that are fixed or folded. The fixed stock has a major con to it as it is: the length of the pull may not be suitable for some shooters. This means the reach might be a little too much. So it’s important to find an MPX stock that will be fitting for you rather than make using your MPX a struggle. 

Your MPX Can’t Be Fired If You Are Using A Folded Stock

To better clarify this, your folding stock is used for storage purposes only. It cannot be used for the purpose of making your length of pull shorter. For safety reasons, it cannot be fire if your stock is in the folded position. You can use it when it is unfolded and fully deployed. But you need to find one that will fit your length of pull. 

How to Install a SIG MPX Stock

Knowing how to install a Sig MPX stock will be easy if you know what you are doing. If you don’t know how to install one, don’t worry. The following is a brief guide on how you can install your stock and put it to good use once all is said and done. Here’s what you need to do:

  1. First and foremost, be sure to check if your weapon is unloaded. This means checking to see if the mag well is empty as well as the chamber. Once you are all clear, move on to the next step. 

  2. Separate the upper from the lower. Then remove the buffer from the back of the receiver. Using an Allen wrench, loosen the set screw to ensure that the buffer is loose enough for removal. 

  3. Level the set screw of the new stock and make sure it is level with the Picatinny rail slot. Then tighten the set screw in a clockwise motion using an Allen wrench.  

  4. Replace the buffer tube back into the rear of the MPX receiver.

  5. Re-install both the upper and lower receiver respectively. Test to see if everything is put together. At this point, you should be finished.

Conclusion

The best Sig MPX stock for you is out there. We hope that one of the excellent options we reviewed in this article stands out as the ideal choice for you. It’s important to find one that will provide you with excellent ergonomics, solid support, and the ability to control your MPX gun without having to compromise your accuracy or overall shooting ability. Plus, it’s guaranteed to last you almost a lifetime because of its quality alone. If you want a stock that can truly give you less recoil and better control, one of the products featured above might be just what you need. 

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!

Leave a Comment