Best SIG P320 Magazines – 2020 Complete Review

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Finding the best SIG P320 Magazine might be a challenge. But if you need magazines for your P320, regardless of the application you use it for, you’ll need to find one that will fit your pistol without any issues. A great magazine has to be reliable and will be able to hold as many shots as you need. You may not go through the entire magazine, but you’ll have enough handy for whatever the application calls for.

To get you started on finding the best SIG P320 magazine, we’ve put together a list of the seven of the best magazines on the market for the SIG P320 pistol. Before we get to the list itself, we’re going to dive into why you need new magazines and how you can choose one for your own personal use.

Comparison of the Best SIG P320 Magazines

IMAGEPRODUCT
  • Holds up to 10 rounds.
  • Best overall SIG P320 magazine.
  • Chambered to fire 9mm rounds.
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  • 12-round capacity.
  • Chambered in 9mm rounds.
  • Runner-up for best overall SIG P320 magazine.
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  • 32-round capacity.
  • Accepts 9mm rounds.
  • Best SIG P320 magazine for the money.
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  • Fits 9mm rounds.
  • High-quality steel construction.
  • Best 10-round Magazine for SIG P320 pistols.
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  • Accepts 9mm caliber rounds.
  • Made from high-quality materials.
  • Best 15-round magazine for P320 pistols.
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  • Accepts 9mm rounds.
  • Made from high-quality steel.
  • Best 17 round magazine for P320 pistols.
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  • Fits 9mm rounds.
  • Made from high-quality materials.
  • Best 21-round magazine for P320 pistols.
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Why Do You Need a New Magazine?

There are a few good reasons why you’ll need a new magazine. You’d be insane to pass up the opportunity to get one for your pistol. In fact, you should get more than one. We’ll also explain some of the other reasons why you need a new magazine:

Extras Are a Must

Things happen, even with the most reliable magazines for a P320 pistol. Jamming is a common occurrence in a malfunctioning magazine. In the event of a magazine jam, you’re definitely going to need to unload it from the mag well so you can replace it with a fresh one that will be a lot more reliable and jam-free. In some applications, a malfunctioning magazine can put you at a dangerous disadvantage.

They Are Great for Concealed Carry

These magazines are small enough to be concealed like the pistol itself. It’s important to keep it either stored in the pistol itself or in a carrying case of some kind during transport. These magazines should be kept out of your pocket unless they are in a holder of some kind to protect against possible unintentional discharge.

You’ll Need as Much Firepower as You Can Get

There is never such a thing as having too many magazines. You’ll have as many as you need depending on your application. You won’t even have to worry about whether or not carrying too many rounds is considered overkill. This might apply more to target shooters and competitive shooters because they will have the number of rounds they’ll need to punch through targets.

How to Choose a New SIG P320 Magazine

In order to find the SIG P320 Magazine that best fits you, you’re going to have to take a look at some of the characteristics that go into making one stand out among the rest. It’s really important to know what these characteristics are so you know the difference between a great, high-quality magazine and something that is crappy in quality and unreliable. Here’s what you should be looking for:

Price

While it’s not really a feature related to the functionality of a magazine, it should be addressed anyway, especially when you’re looking for the best quality you can possibly afford. As a warning, don’t settle for a ridiculously cheap magazine. This will usually result in bad quality and be more likely to malfunction. Look for the best quality and reliability within your budget range. Even if it means paying more, it will be a lot better in terms of value.

Choose Great Quality

What makes great quality? The short answer is the materials a product is made from. In the case of P320 magazines, it’s a combination of high-quality steel and polymer. Sometimes, magazines may also have an anodized coating for added toughness. Either way, these are built to be tough and will have the ability to resist hard surface impacts should it free-fall.

How Many Rounds Do You Need?

Remember, the number of rounds you need per magazine will depend on your personal preferences. So if you’re using it for concealed carry applications, you can start off with the standard amount. If you’re more of a target shooter or competitive shooter, you may look at extended mags.

Quick Take - The Best SIG P320 Magazines

Review of the Best SIG P320 Magazines

The following is a list of the seven best SIG P320 magazines currently on the market as of this writing. While the list might be subject to change between now and next year, this will give you a peek at what’s popular among P320 users. Remember to keep in mind some of the characteristics and features of each magazine.

Since you have a good idea of what you’re looking for in a magazine, you can now find one that will suit any application. Now, let’s kick off our list by giving you a glimpse at our “best overall” choice:

Pros

  • Easy and Quick Loading
  • Very Solid Construction
  • Excellent for EDC or CCW Use
  • Fits Perfectly in Most P320 Pistols
  • Very Reliable Feeding and Shooting 

Cons

  • None

What Recent Buyers Report

A lot of recent buyers were satisfied with the magazine. The construction is solid and fits perfectly with most pistols. One user said that the loading was quite easy and the spring quality was solid enough to handle a full load. Shooting-wise, feeding was reliable and had no jams to speak of.

Why it Stands Out to Us

The reason it’s our best overall choice is that the magazine functions perfectly. Furthermore, it’s built tough to handle the hard surface impact. So if it free-falls and hits the floor or pavement, it won’t break in half. In other words, it’s a tough unit that will give you years or even decades of service.

Who Will Use This Most

This magazine is excellent for everyday use. So you’ll get a whole lot of concealed carry practitioners to get this magazine for their own use. Since it’s tough and reliable, they’ll probably get extras of this specific magazine.

What Could Be Improved and Why

Aside from no obvious cons, one idea to make it better is to include some magazine oil to ensure the inner workings are in proper order. Sometimes, you’ll need to clean and maintain your magazines so they will be able to continue with their intended purpose. Take care of them and they will take care of you.

Bottom Line

The Sig Sauer P320 full-size 9 mm magazine is considered one of the best of the business. If you’re looking for something that has excellent feeding and firing ability and solid construction, you’d be crazy to pass up on the opportunity to see this in action.

Pros

  • Easy to Clean and Maintain
  • Fits Most P320/P250 Magazines
  • Great for CCW and Target Shooting
  • Fits Most Sig P320 Pistols Like a Glove
  • Super Durable Construction and Quality

Cons

  • Might Not Fit All P320 Pistols Properly
  • Might Be a Little Loose in Some Mag Wells
  • Challenging to Disassemble and Assemble

What Recent Buyers Report

A lot of recent buyers were satisfied overall with this magazine. It’s compact, handles plenty of rounds, and definitely serves its purpose according to many buyers. Some buyers used this for concealed carry purposes and to have extras handy. It’s also a favorite among casual target shooters as well. 

Why it Stands Out to Us

This magazine has 12 rounds to work with, which is about the standard amount you get in a P320. It’s just enough for you to carry in case of a self-defense situation. It’s lightweight, small in size, and will be reliable in situations where you need it the most.

Who Will Use This Most

Once again, most users will be your CCW kind of users. In this, they found something that is concealable, durable, and will be worth buying the extra mags. Since they’ll have 12 rounds max per magazine, this might be the ideal magazine for EDC purposes.

What Could Be Improved and Why

This magazine should be easy to assemble and disassemble. That way, it won’t make cleaning or maintenance such a frustrating task. You want to easily clean these so they won’t rust, corrode, or get damaged in some other way. If you must clean and maintain them, then it has to be easy for most users.

Bottom Line

If you’re looking for a pretty good magazine that is made for CCW use, the Sig Sauer Magazine for P320/P250 pistols could be what you’re looking for. Especially if you’re looking for something that is simple, reliable, and will give you just enough rounds to have around in case a situation warrants the use of a pistol.

Pros

  • Accepts Most 9 mm Rounds
  • Affordable for Most Budgets
  • Very Durable and Solid Construction
  • Easy to Load in Most P320 Sig Sauer Pistols
  • Excellent for Casual Target Shooting and Competition Shooting

Cons

  • It May Be Difficult to Load for Some Users
  • May Not Be Ideal for Self-Defense Purposes
  • May Malfunction if Consistently Loaded to Full Capacity

What Recent Buyers Report

Recent buyers were able to use this magazine for the purpose of target shooting and competition shooting. One competitive shooter said that he uses these magazines all the time because they give him more rounds and fewer magazines to carry in the process. This saved him a lot of time and gave him a better advantage over his opponents.

Why it Stands Out to Us

Thirty-two rounds are a lot more than your standard P320 magazines. But rest assured, this is the magazine that is best used for applications where a large number of rounds may be necessary. It’s perfect for a long day at the range or an intense competition that will get down to the wire. The construction from the inside out is solid and reliable, and for the most part, loading is smooth.

Who Will Use This Most

This magazine is affordable for most users. and will be best used for those who want to spend a day at the range firing off every round they’ve got going up against paper targets or through a “run and gun” course. This will be a magazine used by those who want to have the most fun out of their P320 pistol.

What Could Be Improved and Why

Some improvements to the inner workings of the magazine might be a possible idea. This way, you’ll deal with fewer malfunctions and jamming issues. Even with high-capacity magazines, this can be an issue unless there are some improvements made. One place to start is strengthening the inner springs so it can handle more rounds.

Bottom Line

If you’re looking for a lot of rounds to work with at a price that you can afford, the Promag Sig Sauer P320 9 mm magazine might be right up your alley. Solid construction, a large capacity of rounds to work with, and easy to fit, this magazine is perfect for the competitive shooter or for someone who loves a good, long day at the range.

Best 10-Round Magazine: 
Sig Sauer P320 Compact 9 mm 10-Round

Pros

  • Excellent for EDC Purposes
  • Small and Compact for Concealability
  • Super Durable Construction and Almost Indestructible
  • Anti-Friction Coating Included
  • Springs are Not as Stiff, Makes Loading Easy for Most Users

Cons

  • Some Wiggle Room Was Reported by Some Users
  • Some Were Not Satisfied With it Not Being Made in the U.S.A.
  • While Malfunctions are Few and Far Between, Some Say Consistently Loading to Full Capacity Can Cause Them

What Recent Buyers Report

This was a popular magazine for a lot of recent buyers who were concealed carry shooters. One user even said he was just getting started with carrying a pistol on him at all times and needed a magazine that was best as a starter. So far, he’s had no complaints with the magazine after a few test sessions at the range.

Why it Stands Out to Us

This magazine is compact, concealable, and will most likely be your best choice for extra magazines if you’re either in an EDC or target shooting application. Either way, you can discreetly store these in either a tactical belt or vest with just enough compartments to carry them. 

Who Will Use This Most

This might be a magazine best used by concealed carry users who are starting out. So this might be considered a “starter” magazine since it holds fewer rounds than a standard magazine. It will give them a chance to get to know their P320 pistol so they have a good idea of how it will work, especially in situations when a life and death situation might happen.

What Could Be Improved and Why

One of the things that could be improved is to make the spring tension less tight. This will allow you to load and reload the magazine with little to no difficulty whatsoever. This process shouldn’t be a frustrating task, even for rookie CCW users.

Bottom Line

If ten rounds are what you’re looking for in your next magazine, then the Sig Sauer P250/P320 Compact 9 mm Ten-Round Magazine might be just what the doctor ordered. While it might be the closest thing to a standard magazine, it’s perfect for those who don’t want too many rounds at their disposal.

Best 15-Round Magazine: 
Sig Sauer P320 Compact 9 mm 15-Round

Pros

  • Solid Construction
  • Compact in Size, Perfect for Concealability
  • Great for Concealed Carry and CCW Training
  • Easy to Load and Doesn’t Take a Long Time to Get to Full Capacity
  • Very Durable and Can Handle the Toughest Conditions and Impacts

Cons

  • A Follower Might Have a Slight Catch at the Top
  • Some Have Had Issues Trying to Load the Magazine
  • Some Were Not Satisfied With the Magazine Being Made Outside of the U.S.A.

What Recent Buyers Report

Most recent buyers were either new CCW users or seasoned veterans. Either way, they were impressed with the magazine’s capabilities and what it was able to do for them. The feeding was reliable and had no jamming whatsoever after 100 or more rounds. Most CCW trainees used this for practice shooting and were quite impressed with the overall performance.

Why it Stands Out to Us

This magazine is solid in construction and slightly longer than most magazines. But they’re still concealable for most users. It’s the perfect magazine that can be used for every day carry. Plus, you’ll be able to carry extras of these without worrying about whether or not if you want a handful of additional rounds or not.

Who Will Use This Most

This will be used by most concealed carry users. As mentioned earlier, it’s also great for training purposes as well. So no matter your level of ability when it comes to using a pistol, this magazine will fit perfectly with all kinds of shooters. Target shooting and even self-defense purposes are the best applications that will fit these magazines.

What Could Be Improved and Why

One of the things that might be in need of improvement would be to make the follower a little brighter and easier to load for most users. This way, they’ll know how many rounds they have in and how many more they’ll need to go to get it to full capacity. At the same time, the follower should be “catch-less” so it can free-fall when released.

Bottom Line

Whether you’re a veteran concealed carry shooter or just starting out, the Sig Sauer P250/P320 magazine with 15 rounds might be exactly what you’ll need for your intents and purposes. Especially when you’re starting out with using a pistol and need a magazine that will give you enough rounds for a few good training sessions.

Pros

  • Easy to Disassemble and Clean
  • Fits P320 Mag Wells Like a Glove
  • Solid Construction and Very Sturdy, as Well
  • Great for Target Shooting and Concealed Carry Use
  • Feeding and Reliability Are Top-Notch With No Jamming to Report

Cons

  • Might Be a Challenge to Load or Reload at First
  • Some Have Had Trouble Loading the Final Two Rounds
  • May Not Be Legal in Some Jurisdictions Due to Gun Laws

What Recent Buyers Report

This magazine was made for the pistol users who want more rounds for every day concealed carry. One user was satisfied with the overall performance and say that it never jammed on him, even after 100+ rounds. He was also happy with the fact that when his magazines fell to the pavement, they stayed intact and didn’t break. 

Why it Stands Out to Us

This is another Sig Sauer brand magazine that will handle full-sized 9 mm rounds. It’s also able to handle a whole lot of them that will be used for almost any application. While more rounds are usually reserved for target practice and competition shooting, this passes as a really decent EDC magazine for concealed carry owners.

Who Will Use This Most

The magazine will likely be used by concealed carry users. They’ll also put it to good use on the weekends at the range so they need a magazine that stays in functioning order and won’t get a little rusty due to lack of use. 

What Could Be Improved and Why

Once again, we revisit the idea of improving the overall spring tension. This will make loading the magazine to full capacity a lot easier. Sure, while it may not be wise to do this consistently, it should be easy whenever we feel like adding more rounds rather than having it half full.

Bottom Line

If 17 rounds are more your speed, there’s a good chance that you’ll love the Sig Sauer 17-Round Magazine, especially when you want something that is good enough for everyday use or a long day at the range. The more rounds you need, the better.

Best 21-Round Magazine:
 Sig Sauer P320 X-Five 9 mm 21-Round

Pros

  • Works Great With FMJ Rounds
  • Excellent for a Long Day at the Range
  • Very Reliable After 50+ Rounds and No Jamming to Report
  • Super Durable, Can Handle a Lot of Impact and Abuse
  • One of the Best in a Class of Factory Replacement Magazines

Cons

  • Shipping Might Be Slower 
  • Maybe a Little Pricey for Some Budget Shoppers
  • Some Have Not Been Satisfied With the Fact That it's Foreign-Made

What Recent Buyers Report

A lot of recent buyers were either target shooters or competition shooters. They were all satisfied with the overall functionality and reliability of the magazine itself. Most users were able to shoot off rounds without any malfunctions or jams to speak of. 

Why it Stands Out to Us

The magazine is another high-capacity magazine that will definitely give you more than enough shots. It’s also a competition shooter’s dream to have a magazine with so many rounds to work with and a very smooth, reliable feed to boot. Not bad for a magazine that can handle so many rounds at a time. 

Who Will Use This Most

This will be used mostly by target shooters and competitive shooters alike. If you want more than enough rounds for your intended application, chances are this magazine will certainly fit your needs. This will definitely be a favorite for those who won’t flinch at the idea of having so many rounds at their disposal.

What Could Be Improved and Why

A possible idea for improvement would be to tighten up the spring tension a bit. This way, it will be able to handle more rounds when it gets close to full capacity. It may make loading a little difficult for some users, but it would be worth making sure the quality is slightly better so it can handle all kinds of rounds consistently.

Bottom Line

If 10, 12, or even 17 rounds don’t satisfy you, it might be wise to go with this Sig Sauer magazine, especially if you’re looking for a magazine that will allow you to stand out over the competition. 

Aspects to Consider Before Buying

While the characteristics are something to consider, there are some additional aspects that should factor into your purchasing decision. As you look through every single magazine, it is important to consider the following aspects so you can determine if a magazine is a good fit for you or not. Here’s what you need to mull over:

Is it Legal to Own in My Jurisdiction?

While there are some gun laws that will allow pistol magazines, they won’t allow you to own magazines of a certain capacity. For example, the State of New Jersey issued a magazine ban where it was illegal to own a pistol magazine with more than ten rounds. Despite the legal challenges you could potentially face, this should serve as a reminder to research the local, state, and federal laws. This will save you a whole lot of headaches in the future due to unintentionally breaking the law.

How Experienced Am I Using a Pistol?

If you have never used a pistol and have a willingness to learn, you’ll be able to get a good magazine that will serve as a “training mag” for your practice shots. It’s highly recommended that you get a magazine with ten rounds to start off. If it’s legal in your jurisdiction, you’re more than welcome to get a magazine with more rounds included.

Do I Really Need Extra Magazines?

While this really isn’t a “yes” or “no” question, it’s highly recommended that you do. As mentioned before, magazines will have a tendency to jam or malfunction. So having extra magazines handy, just in case, is a lot better than having to rely on only one, especially when you’re in a situation where a malfunctioning magazine can put you in a dangerous position (i.e.--home defense). 

Conclusion

The best SIG P320 magazine is out there. It doesn’t matter how many rounds you need, you’ll want something that is reliable, durable, and will be something you can hold onto for years or even decades to come if you take proper care of them. These magazines will definitely make the most out of your P320 pistol, no matter what the application.

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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