Best SIG P320 Magazine Extensions – 2020 Buyer’s Guide

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Are you looking for the best SIG P320 Magazine Extension? If you are, then you’ve come to the right place. While you might have reliable mags for your SIG P320 on hand, it’s never a bad thing to have magazine extensions on hand.

Sometimes, you’ll need more than enough rounds to get you through any application like target shooting, competitive shooting, or even a self-defense situation. But if you think you need more rounds than usual, this is the place to find a magazine extension that will fit you best. To help you find the right one, we’ve put together a list of the five best SIG P320 magazine extensions that are currently on the market right now.

Before we get to the list, we’ll talk about what magazine size you might need for your pistol and the characteristics that make a great magazine extension stand out among the rest.

Comparison of the Best SIG P320 Magazine Extensions

PRODUCT
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HYVE Technologies Sig Sauer P320 Compact Magazine Extension

  • Made from high-quality aluminum.
  • Runner-up for best overall P320 Magazine Extension.
  • Basepad that adds on more factory round mags for a P320 pistol.
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Springer Precision SIG P320 140mm Base Pads w/Power Spring

  • Base pads included with power spring.
  • Pad made from high-quality aluminum.
  • Best SIG P320 Magazine Extension for the money.
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Obsidian Arms Extension for P320 Subcompact

  • Made in the USA.
  • Weights one ounce.
  • Made from high-quality materials for added durability.
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X-Grip Sig Sauer P320

  • Compatible with most calibers.
  • Made from high-quality polymer.
  • Simple design that makes it easy to install.
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What Size Magazine Do I Need?

The answer to this question is that it depends. It depends on how many rounds you might need. Keep in mind that the more capacity a magazine extension has, the better chance that it will be longer in size. There really isn’t a recommended size that we should tell you to go with. It’s just a matter of how many rounds you might need depending on your application.

How to Choose a Mag Extension For Your SIG P320

Of course, it’s the characteristics and interesting features that are the reason why we chose each magazine extension to be featured on our list. Now, you can follow the same formula that we have so you can choose one for your own personal use. The following are some characteristics and other aspects to look for:

Price

The odds of a budget shopper finding a good magazine extension at an affordable price is high. We can guarantee you the first thing that they’ll look for is the price tag. If it’s affordable for their budget and if it’s able to function properly, then it’s a done deal. The best quality should matter more than the price tag itself.

How Many Rounds Do You Need?

Some will want the standard capacity while others tend to aim for more rounds, or you can have a little less than normal. Either way, it doesn’t matter. If you’re using your SIG P320, consider the application you’re using it for before deciding on how many rounds you want in a magazine extension.

Great Quality

Quality should always trump everything else when you find something to buy. Especially when it comes to purchasing magazine extensions. Most of these will be made the same way as regular magazines. Most of the materials that will be used are a combination of steel and polymer. These two are proven to take on all kinds of impact and abuse like nothing else.

Quick Take - The Best SIG P320 Magazine Extensions

Review of the Best SIG P320 Magazine Extensions

The following is a list of the five best SIG P320 Magazine Extensions that are currently on the market. It is important for you to choose one that will last you a long period of time. So choose wisely as you’re looking through each one.

Also, keep in mind the features and characteristics of each one. This way, you might be able to find one that might match your ideal magazine extender. Let’s begin by taking a look at our “best overall” choice for SIG P320 Magazine Extensions:

Pros

  • Super Durable Construction
  • Fits Perfectly On Most P320 Pistols
  • Easy To Install, Takes a Few Minutes
  • Multiple Grip Frames Make it Easier For Most Pistols
  • Easily Extends the Magazine By a Few More Rounds 

Cons

  • None

What Recent Buyers Report

A handful of recent buyers were able to use this to extend the magazines just by a few rounds. None of them had difficulty with the installation process. One liked it so much that he bought a couple more for his additional pistols. They were satisfied with how much additional firepower they were able to gain out of it once it was installed.

Why it Stands Out to Us

This is just strictly a baseplate. There are no springs or anything that might make the installation process more difficult. One of the other reasons why it sticks out is because it fits most magazine frames. So it can go with most pistols you might have on you other than the P320. If that’s the case, you should buy extra extensions.

Who Will Use This Most

This is for those who want a simple magazine extension to install on their pistols. It will definitely eliminate the additional fitting or small alterations that need to be done in order to make it a perfect fit for most pistols. It might be the closest thing to a universal fit when it comes to extensions.

What Could Be Improved and Why

Despite no obvious cons, one possible idea would be to include a package deal that would go nicely with this extension. Perhaps a couple of additional magazines will be a good idea to sweeten the deal. Not only that, it will definitely save you a good amount of money rather than having to purchase extra magazines separately.

Bottom Line

If you’re looking for a magazine extender that is simple to install on most pistols, odds are the HYVE Technologies Magazine Extension might be right up your alley. It’s simple in design, durable in quality, and will give you a few extra rounds to work with on your pistol. What more can you possibly ask for?

Pros

  • Looks Great On Most Pistols 
  • The Fit and Finish Are Excellent
  • Very Affordable For Most Budgets 
  • Easy To Install, Takes a Few Minutes
  • Easily Adds On a Few More Rounds To Your Magazines

Cons

  • Some Fitting Might Be Required 
  • Spring Might Not Be as Strong as Expected
  • Some Complained About the Pad Possibly Being a Little Flimsy in Quality

What Recent Buyers Report

A handful of recent buyers were satisfied with the extension as a whole. Most of them were able to extend their magazines by a few rounds. One recent buyer said that he was satisfied with how many extra rounds he was able to fit on his P320 pistol that he uses for competition purposes.

Why it Stands Out to Us

For a magazine extension that is affordable for most budgets, it’s durable and easy to install. Not to mention, it comes in a wide array of colors. While the colors might come down to personal preference, it definitely adds on some more firepower for all kinds of P320 users. This magazine extension is far from being a cheap quality unit.

Who Will Use This Most

This will likely be used by P320 pistol owners that will more or less use this as a starter model. If they have never used a magazine extension before, this will be one that’s easy to use and install. It will also be the go-to option for budget shoppers who are among the competitive or casual target shooters.

What Could Be Improved and Why

One improvement we’d like to see is making the spring slightly sturdier than it is now. Sure, the quality is fine but sometimes it might have a tendency to jam depending on how many rounds you put in. The spring should be strong enough to handle more rounds.

Bottom Line

The Springer Precision SIG P320 magazine extension might be your best choice if you’re looking for something that’s affordable. Even better, it expands a few more much-needed rounds into your magazine. More rounds for a lesser price? Need we say more?

Obsidian Arms Pinky Extension for P320 Subcompact

Pros

  • Installs Easily and Fits Like a Glove
  • It Provides Excellent Comfort For Larger Hands
  • It Gives You An Excellent Grip On Your Magazines
  • Easily Adds a Few Extra Rounds To Your P320 Magazine
  • Very Durable, It Can Handle Repeated Dropping and Impact

Cons

  • Some Fitting Might Be Required
  • Installation Might Be a Challenge For Some
  • Might Be a Little Bigger Than Expected For Some

What Recent Buyers Report

A lot of recent buyers were satisfied with the overall grip of the extension. One said that once it was installed on his magwell, it definitely held itself in place without any wiggle room to speak of. Aside from the excellent grip, it was also able to add some more space for additional rounds on almost all P320 pistols.

Why it Stands Out to Us

This is a solid magazine extender that is made from high-quality aluminum and anodized for added protection. In short, it’s as tough as the magazine itself. Not to mention, it fits Sig Sauer pistols like a glove with no alterations needed.

Who Will Use This Most

This magazine extension will probably be used by shooters who want something that is simple in design and simple to install. It will take a few minutes and the right kind of tools just so you can add a few additional rounds to your P320. Once you’ve added it on, you’ll be able to work through your extra rounds at the range or during a competition.

What Could Be Improved and Why

While not really an improvement idea, this magazine extension should include a couple of additional springs for good measure. This way, it will make it more functional. So why not add on a couple of solid springs that will make the loading and reloading a little easier for its users?

Bottom Line

The Obsidian Arms magazine extension might be your best bet if you’re looking for something that is simple and lightweight to use. Even better, it is almost guaranteed to fit most Sig Sauer pistols with ease including the P320. No matter which pistol you have, this extension will fit perfectly.

Pros

  • Simple To Install
  • Fits Great With Most Magazines
  • Excellent Grip Around the Magazine
  • Extends the Magazine To a Few Rounds
  • Will Fit All Kinds of Pistol Calibers (i.e.--9mm, .38, etc)

Cons

  • None

What Recent Buyers Report

There were most buyers who were looking for something that was simple to install and gave them about three extra rounds to work with. This magazine extension left them quite impressed. Some of them were competitive shooters that were looking to add extra space to some of their spare magazines. Sure enough, they worked like a charm and they stayed in place the whole time they were installed.

Why it Stands Out to Us

Once again, this magazine extender can be installed sans the springs that usually come with other extensions. But this might just be enough for those who want to add a few extra rounds to their P320. Competitive shooting or casual shooting, it doesn’t matter to us. Plus it fits like a glove and grips just like flypaper.

Who Will Use This Most

This will be used by P320 owners who want a simple solution to adding more rounds to their magazines. It will be best used by your average target shooters and competitive marksmen. In applications like this, there is no such thing as having too many rounds.

What Could Be Improved and Why

Despite no cons, this extender should be available in different sizes. This way, they can fit most large magazine wells while another size can fit smaller ones. That should be a nice addition considering that it is compatible with most pistols that are chambered in different calibers.

Bottom Line

If simple, durable, and easy to use is what you’re looking for in a magazine extension, the X-Grip might be your cup of coffee. Just a few minutes and you’ll have enough space to add on a few extra rounds. If that isn’t impressive to you, we cannot tell you what is. 

Pros

  • Super Durable Spring and Base Pad
  • Allows For Better Feeding and Reliability
  • Great For All Kinds of Purposes For Your Pistol
  • Allows Magazines To Extend To a Certain Count
  • Fits Into the Magwell With Ease, No Alterations Needed

Cons

  • Some Fitting May Be Required
  • Installation Might Be a Challenge For Some
  • The Fitting Might Be Suspect On Some Other Pistol Calibers

What Recent Buyers Report

Most recent buyers were satisfied with the use of this magazine extender. They didn’t have any kind of trouble fitting it on their magazine and therefore were allowed to add more rounds to their magazine. One user, in particular, was a competition shooter whose goal was to get more rounds out of one of his magazines just so he can get an even better edge on the competition.

Why it Stands Out to Us

This is an easy to install unit that will definitely give your P320 pistol a boost in shooting. Some say that you can’t have too many rounds. A lot of us beg to differ. But if you must have more rounds in your magazine, then an extender that is durable and solid in construction like this one is what you might consider the best solution.

Who Will Use This Most

A lot of users will be competitive shooters and even casual target shooters. This will work to your advantage if you think your current magazine doesn’t have enough rounds to hold. It will also be used by those who want to quickly install an extender without having to make any alterations to the pistol itself.

What Could Be Improved and Why

While the P320 is a pistol that can be chambered in most calibers, it would be wise to make it a universal style extender so it can handle all kinds of magazines that fit different calibers. 9mm rounds, .45 rounds, it doesn’t really matter. As long as it fits and gives you more rounds to work with, you should be in business.

Bottom Line

The Taylor Freelance Magazine Extender is by far our best overall choice. If you want something that is overall solid in construction and can extend your magazine to accommodate more rounds, then you’ll want to give this puppy a closer look.

Pros and Cons of Magazine Extensions

While there are plenty of advantages that you might enjoy while using a magazine extension, there are some disadvantages that come with the territory. If you invest in a good quality magazine extension, here’s what you need to know about them:

Pros

Doesn’t Bulk Up the Pistol

This is a definite plus if you practice concealed carry. In fact, a magazine extension is so small that it won’t take up too much space, and it won’t compromise your concealability at all. This will be a major plus if you’re using it for self-defense purposes.

More Rounds

Of course, this is the absolute goal with these extensions. You have just enough space to add more rounds so you have more firepower to work with. In fact, you’ll be able to add on at least three to five additional rounds at best. 

Easy to Install and Doesn’t Add on Additional Weight

The best thing about these is additional rounds are one quick install away. You won’t need complex tools, nor do you need a gunsmith to install this extension for you. Since they are also lightweight and small, they won’t add any additional weight to the pistol at all. 

Cons

It May Not Fit All Pistols

Granted, while there are some that will fit a wide variety of pistols in different calibers, not all magazine extensions will be the same. Some P320 magazine extensions will fit on Sig Sauer pistols, but won’t be able to fit on Glock pistols. So they’re not as universal as some will assume.

Feeding Issues

Yes, feeding issues may arise from magazine extensions. This might be due to the fact that you’re adding on a little additional pressure (or maybe a little too much) to the magazine itself. That alone might cause some additional stress on the magazine’s inner workings.

Conclusion

The best SIG P320 magazine extension is out there. But finding the right one might take some time. Find one that will best fit your P320 pistol and your personal needs and you’ll have more than enough rounds at your disposal. Remember, this extension might be with you for a long period of time, so choose wisely.

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