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The Ultimate Glock Magazine Compatibility Guide
Why do you love Glocks?
Is it the reliability? The price? The aftermarket support? I know it’s not for the looks. However, if there’s one thing for certain, the compatibility between the different models is vast and greatly appreciated. It’s something that many manufacturers have tried to emulate for decades.
This is especially true among the magazines. Even across generations, many magazines are compatible.
All different sizes and capacities, but are they interchangeable? Source
That’s a primary reason many militaries use the Glock pistol, even those with low budgets. If you have an issue with a magazine, you can simply pick up another one from the floor, and chances are it will work…half kidding.
With so many models in the Glock lineup, we decided it was worthwhile to explore magazine compatibility among all the Glocks on the market, from your full-size combat Glocks to your EDC Glocks that go perfectly under your Sunday best.
Why Trust Me?
I’ve been around Glocks for a long time. And I’ve been able to shoot, customize, tinker, and put thousands of rounds through almost every model on the market, past and present. Most recently, my EDC/SHTF pistol is a fairly heavily modified Glock 19X.
And at least twice a week, I get together with friends and shoot—a lot. And on Sundays, we hold competitions where part compatibility comes in handy. So things get switched around, fixed, and we find new things that work well.
There isn’t a Glock I’m not familiar with.
9mm Models
Glock 19/26/49
You cannot go wrong with any generation of the Glock 19.
The Glock 19 is the most popular model, so that’s where we’ll start!
Given the Glock 19’s compact frame and grip, it comes with a standard 15-round double-stack magazine. It’s also the same magazine that comes with your Glock 49, as it’s a crossover between the 19-frame and the 17-slide.
And it will fit in your Glock 26 as well, although it extends beyond the base of the grip. Many of the shooters who use a 26 for self-defense run 19 magazines for the extra capacity. Important note: The standard Glock 26 magazine will not work in any of the above-mentioned models due to its length.
However, this magazine won’t fit in longer-framed Glocks, such as the 17, 19X, and 45, and so forth, or the Slimline models. We’ll get to those next.
Glock 17/17L/18/19/26/34/45/47/49
No matter the season, the Glock 17 has your back. Source
Your Glock 17-round magazine will fit in the broadest array of Glock models out of any other magazine we’ll cover. In addition to the full-size Glocks mentioned above, these magazines will also fit the 19, 26, and 49 models, as their grips are shorter than those of the 17.
Glock 19X
No caption needed. Source
The one and only Peanut Butter Glock. My EDC, my SHTF, my go-to for anything that requires something smaller than an AR-15. I may be biased, of course, but this is the best Glock on the market in my opinion. The 45 is cool, too, but not as cool.
Many magazines are not compatible with the 19X due to the lip on the magazine well.
You’ll be able to choose from a 17-round and 19-round magazine for your 19X, and they are the only coyote tan magazines you can get from the factory.
These magazines will work in Glock 19s and 17s, as well as the pistols they are compatible with, but not the other way around, due to the lip on the bottom of the grip on the 19X.
Glock 43X/48
Built for carry. Source
Slimline Glocks, like these, have traditionally only accepted single-stack magazines, making them incompatible with the double-stack Glock magazines, such as those that come standard with the 17, 19, 45, and so on. However, the thinner profile makes them ideal for concealed carry.
However, Glock has finally announced factory 15-round magazines for the Glock 43X/48, delivering what many have been asking for! The upgrade comes with a change in material, as the body of the magazines are now metal.
If you purchased your 43X or 48 a while ago, you may have received standard 10-round magazines, so while they are now obsolete, you can still save them for the range or, of course, if you live in a restricted state.
Remember: since the Glock 43X is a crossover between the 43 slide and 48 frame, it won’t accept Glock 43 magazines, which can be very confusing.
Glock 43
Small enough for pocket carry if you wish. Source
The Glock 43 is the smallest 9mm Glock you can get your hands on and the magazines reflect it. The standard 6-round magazine may not be the most effective against multiple attackers, but it will suffice in a pinch.
It’s a lightweight single-stack 9mm with just as much reliability as any other Glock magazine, making it perfect for carrying when clothes are minimal, such as in the summertime.
These magazines are solely for the 43.
10mm Models
Glock 20/40
A ton of power at your fingertips. Source
A standard 15-round magazine comes with the Glock 20 and the Glock 40. Fifteen rounds of hard-hitting 10mm is a great thing to have on your hip when you’re out in big game country where the animals lurking around are not scared of you.
Bear, Elk, Moose, you name it, and someone is hunting it with a 10mm on their hip. Some people even carry 10mm, so that if they ever have to use it in self-defense, they won’t have to pull that trigger twice.
You can use these magazines with the Glock 29, but not vice versa, given the 29’s shorter grip and magazine.
Glock 29
You can journal in peace. Source
Which one of you wild ones is carrying a subcompact 10mm? Bless your soul. That’s not a lot of gun for the big boy 10mm. 10 rounds of 10mm, as I stated before, is more than enough to take care of whatever may come your way.
These magazines won’t fit in the larger 10mm Glocks, though.
.45 ACP Models
Glock 21/41
Ready for the range. Source
Glocks chambered in .45 ACP don’t have the highest capacity, of course, but 13 rounds of .45 is still extremely useful.
The 13-round magazines that come with your Glock 21 and 41 are identical and can also be used with the smaller Glock 30.
Glock 30
Small but mighty. Source
The Glock 30 is a subcompact .45, but its magazine capacity matches that of larger .45s, thanks to its double-stack 10-round magazine. This is a perfect little gun and magazine for concealed carry, especially with those who live and die by the legendary caliber.
Again, you can also use the Glock 21 and 41 magazines with this little guy.
Glock 36
Who says you can’t add some flair to your Glock 36? Source
The Glock 36 is the smallest .45 ACP model and features the lowest capacity magazine as well. With a 6-round standard magazine and lacking the ability to share mags with its .45 ACP siblings, you’re extremely limited here from a magazine perspective.
.40 S&W Models
Glock 22/23/35
Big gun and a big optic make a big combination. Source
This 15-round magazine is the one you will receive when you buy a Glock 22, 24, or 35. It’s not much, considering that 10mm also comes in 15-round magazines, and 9mm comes in 17-round magazines, but I guess that’s why they are discontinuing .40 S&W models other than the Glock 23.
Fifteen rounds will still get the job done, though.
Glock 23
Glock 23, a light, and an optic make a heck of a carry. Source
The smaller Glock 23 is the only .40 S&W variant not being discontinued by Glock, and for good reason. Thirteen rounds of .40 out of a small package is hard to beat, and it’s common in law enforcement.
This 13-round magazine is easily concealed, making the 23 great for concealed carry. You can use this magazine in the Glock 27 as well, but not the full-size .40 S&W models mentioned above.
Glock 27
Different but the same. Source
The Glock 27 is designed for concealed carry. As such, this 9-round magazine sits flush with the grip, making it appear as though you are carrying nothing. Nine rounds of .40 is not much considering the capacities seen today, but it’ll work in a pinch.
Your Glock 27 magazines are only compatible with…you guessed it, the Glock 27.
.357 SIG Models
Glock 31
You don’t want to underestimate the Glock 31. Source
High capacity, high muzzle velocity, and high potential. The Glock 31 is a tough competitor in the home defense and range categories.
It delivers a 15+1 capacity of .357 SIG and has an optional 16-round mag if you’re concerned with capacity. Hey, an extra round can literally save your life! You can use both the 15 and 16-round magazines with the next two guns: the Glock 32 and 33.
Glock 32
Compact yet extremely capable. Source
Re-entering the compact arena, the Glock 32 is your “Glock 19” of the .357 lineup and comes standard with a 13-round magazine. You can also use the higher-capacity magazines from the Glock 31 to maximize your protection.
In the event you downsize to the Glock 33 for an ultra-discreet carry, you can use these 13-round magazines with it for range days or home defense.
Glock 33
Make sure to pair your CCW with defensive ammo. Source
If you want maximum concealment but don’t want to budge from your .357 ammo, the Glock 33 is for you. This subcompact Glock is small yet powerful, offering a standard 9-round magazine.
The good news is that you can use both Glock 31 and 32 magazines with it in the event you need additional ammunition. It’s important to note, though, that the Glock 33’s 9-round magazine is not compatible with any other models.
.380 ACP Models
Glock 42
Made for pocket carry. Source
Not many carry pistols are chambered in .380 anymore, and when you see that this magazine only has six rounds (with or without a finger rest), you can see why. But, for those who still carry .380, this magazine will work reliably. I’d recommend carrying two, though, due to the weak capacity.
If you want to stick with .380 but want higher capacity, check out the next gun!
Glock 25
Looks oddly similar to the Glock 19. Source
The Glock 25 is going to be much harder to find than it’s smaller sibling above, but for some, it’s completely worth the time searching.
It’s similar in size to the Glock 19, which makes room for a larger magazine and you guessed it…more ammo! The standard 15-round magazine will have you much more prepared than you would be with the Glock 42.
Due to the Glock 25’s double-stack magazine, it cannot be shared with the Glock 42. However, it can be utilized with the Glock 28!
Glock 28
The Glock 28 can be hard to find in the wild. Source
Take the Glock 26 and chamber it in .380 ACP, and you have the Glock 28. Boasting a standard 10-round flush fitting magazine, you get a few extra rounds over the Glock 42, yet still have a very concealable pistol. Since it’s a double-stack magazine, it can’t be used with the Glock 42, and it’s too short to be used with the Glock 25.
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Glock 28 .380 ACP 10 Round Magazine
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It gets to have its own dedicated magazine!
.22 LR Models
Glock 44
Looks just like any other Glock. Source
The Glock 44 is the only .22 LR model and has historically come standard with a load-assisted 10-round magazine. The load assist makes these quick and easy to get loaded, which is really what everyone wants when they’re just trying to have fun with their pistol.
However, Glock has announced new 15-round factory magazines for the Glock 44. They have switched to metal bodies, but you’ll still have the convenient load assist tabs!
Buy two, and you can always have one loaded.
Conclusion
It’s pretty wild how compatible Glock magazines are across models and even different platforms, isn’t it? As I mentioned in the introduction, the level of compatibility and aftermarket support that Glocks offer is unparalleled among pistols on the market.
And that leaves you, the shooter, with plenty of options and ways to make your Glock your own. Not many firearms have as much ability to do so. Aside from the AR-15, of course.
Be good and take care.
