9 Best Glock 43X Magazines (2026): Factory 15s, S15 and More

Last updated October 16th 2026

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For years the best Glock 43X magazine was an aftermarket one, because GLOCK only made a ten-rounder. That changed in 2026, when GLOCK started shipping its own fifteen-round magazine that runs on the factory catch. Most magazine guides still haven’t caught up, and the one detail that decides whether a magazine works in your gun, the magazine catch, rarely gets a mention.

So we started there. We priced every 43X magazine in the feeds of the 200+ retailers we track on October 16, 2026, read what each maker says about catches and fit, and picked the nine worth buying, from GLOCK’s own fifteen to range-day nineteens and the one extension that actually fits.

Table of Contents

Best Glock 43X Magazines at a Glance

Magazine	Rounds	Body	Mag catch	Price on October 16, 2026
GLOCK Factory 15-Round Magazine	15	Steel, double stack	Standard factory catch	About $28 to $40
PSA Dagger Micro 15-Round Magazine	15	Micro Slick finish	Polymer catch (per PSA)	About $25
Shield Arms S15 Gen 3	15 (20 with the +5 extension)	Steel, flush with factory length	Steel catch required	About $38 to $41
GLOCK Factory 10-Round Magazine	10	Polymer	Standard factory catch	About $22 to $28
ETS 19-Round Magazine	19	Translucent polymer	Standard factory catch	About $14 to $20
ETS 10-Round Magazine	10	Translucent polymer	Standard factory catch	About $11 to $22
IMI Defense 20-Round Magazine	20	Polymer	Standard factory catch	About $38
Derya DY9Z 15-Round Magazine	15	Steel body	Check the listing	About $26 to $30
Tyrant CNC +4 Magazine Extension	+4 (14 total)	Machined aluminum	Not affected	About $30 to $44

The Magazine Catch Decides What Works

The 43X uses a polymer magazine catch from the factory. Steel magazines push against it harder than polymer ones, and that’s why the catch question shows up on every magazine listing.

Magazine type	Catch it needs	Source
GLOCK factory 15-round (steel)	Standard factory catch	GLOCK: the design “allows customers to maintain the standard magazine catch”
GLOCK factory 10-round (polymer)	Standard factory catch	Factory magazine
Shield Arms S15 and S20 (steel)	Shield Arms steel catch	Shield Arms: “S-Series mags lock up on a steel mag catch, not the factory polymer one”
PSA Dagger Micro 15-round	Polymer catch	PSA: “should be used with polymer mag catches”
ETS and IMI Defense (polymer)	Standard factory catch	Polymer magazines

The takeaway: if you’re buying new magazines today, GLOCK’s factory fifteen-rounder lets you skip the catch question entirely. If you already run Shield Arms magazines with the steel catch, stick with steel magazines rather than mixing in polymer ones, because PSA warns that metal catches cause excessive wear on polymer magazines.

One more thing: Glock 43 magazines are a different, narrower design and don’t fit the 43X. The 43X and the Glock 48 share magazines, which is why nearly everything here is listed as 43X/48. If you’re still setting up the rest of the gun, our Glock 43X parts and accessories guide and best Glock 43X holsters guide cover the rest.

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1. GLOCK Factory 15-Round Magazine: Best Overall

• Capacity: 15
• Body: Steel, double stack
• Magazine catch: Standard factory catch
• Fits: Glock 43X and 48
• Price on October 16, 2026: About $28 to $40

Reliability	5 / 5
Capacity	4 / 5
Value	5 / 5
Compatibility	5 / 5
Availability	4 / 5

For six years, getting fifteen rounds into a 43X meant buying aftermarket magazines and often a new magazine catch. That changed in 2026. In GLOCK’s announcement on April 17, 2026, GLOCK said OEM 15-round magazines for the G43X and G48 were coming to dealers in May, and that both pistols would now ship with them as standard.

The detail that matters most is the catch. GLOCK describes the new magazine as “a metal, double stack design” with “a radius in the magazine catch recess that allows customers to maintain the standard magazine catch.” In plain terms, you don’t need to swap any parts. It drops into a 43X or 48 with the factory catch and runs.

On October 16, 2026 our feeds had it from $27.99 at Primary Arms to $39.89 at Optics Planet, with MidwayUSA at $30.99. That’s less than most aftermarket fifteen-rounders, which makes this the default choice for spare carry magazines.

Best For: Every 43X and 48 owner. Buy these for carry before anything else.

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2. PSA Dagger Micro 15-Round Magazine: Best Value 15-Rounder

• Capacity: 15
• Body: Micro Slick finish
• Magazine catch: Polymer catch (per PSA)
• Fits: PSA Dagger Micro; listed with the 43X by other makers
• Price on October 16, 2026: About $25

Reliability	4 / 5
Capacity	4 / 5
Value	5 / 5
Compatibility	3 / 5
Availability	5 / 5

Palmetto State Armory sells its own 15-round magazine for the Dagger Micro, PSA’s Glock 43X-pattern pistol, and at $24.99 on October 16, 2026 it’s the cheapest fifteen-rounder we found from a big retailer. PSA’s own page shows a 95% rating across 810 reviews for the Micro Slick version.

Two notes from PSA’s listing are worth reading. First, PSA says these magazines “should be used with polymer mag catches” because “aftermarket metal mag catches cause excessive wear” on polymer magazines. Second, they are not compatible with the Dagger Compact or Full Size S frames.

PSA’s page doesn’t name the Glock 43X. Other makers list the Dagger Micro and the 43X together, and plenty of owners run these in Glocks, but treat it like any new carry magazine: shoot a few hundred rounds through it in your gun before you trust it.

Best For: Dagger Micro owners, and 43X owners who want cheap range magazines and will test them first.

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3. Shield Arms S15 Gen 3: Best Steel Aftermarket Magazine

• Capacity: 15 (20 with the +5 extension)
• Body: Steel, flush with factory length
• Magazine catch: Steel catch required
• Fits: Glock 43X and 48
• Price on October 16, 2026: About $38 to $41

Reliability	5 / 5
Capacity	5 / 5
Value	4 / 5
Compatibility	3 / 5
Availability	5 / 5

The S15 is the magazine that created the fifteen-round 43X, and Shield Arms are on the third generation of it. They describe it as a flush-fitting 15-round steel magazine with “50% more capacity than OEM 10-round magazines.”

It has one requirement you can’t skip. In Shield Arms’ own words, “S-Series mags lock up on a steel mag catch, not the factory polymer one,” and they sell starter kits that include the catch. Our feeds had the S15 Gen 3 from $37.80 to $40.99 on October 16, 2026, and the version with a +5 extension, which makes it a 20-round magazine, from about $67.

Now that GLOCK makes its own fifteen-rounder, the S15 makes most sense if you already own a stack of them, or you want the extension. Just don’t mix them carelessly with polymer magazines on the same gun: once the steel catch is in, PSA’s warning about metal catches wearing polymer magazines applies.

Best For: Owners already running S15s, and anyone who wants 20 rounds with the +5 extension.

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4. GLOCK Factory 10-Round Magazine: Best for 10-Round States

• Capacity: 10
• Body: Polymer
• Magazine catch: Standard factory catch
• Fits: Glock 43X and 48
• Price on October 16, 2026: About $22 to $28

Reliability	5 / 5
Capacity	2 / 5
Value	4 / 5
Compatibility	5 / 5
Availability	5 / 5

Before 2026, this was the only factory magazine for the 43X and 48, and it’s still the right one if you live in a state that caps magazines at ten rounds. It’s polymer, it runs on the factory catch, and it’s the magazine most older 43Xs came with.

Prices ran from $21.99 to $27.99 in our feeds on October 16, 2026. If you’re not limited to ten rounds, the factory fifteen-rounder costs only a few dollars more, so this is mainly a compliance pick or a base for an extension.

Best For: Owners in 10-round states, or anyone fitting the Tyrant +4 extension.

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5. ETS 19-Round Magazine: Best Range and Backup Magazine

• Capacity: 19
• Body: Translucent polymer
• Magazine catch: Standard factory catch
• Fits: Glock 43X and 48
• Price on October 16, 2026: About $14 to $20

Reliability	4 / 5
Capacity	5 / 5
Value	5 / 5
Compatibility	4 / 5
Availability	5 / 5

Nineteen rounds in a translucent polymer body for less than $20 is hard to argue with at the range. ETS magazines let you see exactly how many rounds are left, and our feeds had the 19-rounder from $13.99 at GunMag Warehouse to $20.27 on October 16, 2026.

It extends well below the grip, so it’s not something you’ll carry in the gun. As a range magazine or a backup in a bag, it’s the best value on this list. ETS say their advanced polymer won’t crack or break when dropped, which suits a magazine that spends its life hitting the ground on reloads.

Best For: Range days and a high-capacity backup in a bag or truck.

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6. ETS 10-Round Magazine: Cheapest 43X Magazine

• Capacity: 10
• Body: Translucent polymer
• Magazine catch: Standard factory catch
• Fits: Glock 43X and 48
• Price on October 16, 2026: About $11 to $22

Reliability	4 / 5
Capacity	2 / 5
Value	5 / 5
Compatibility	4 / 5
Availability	5 / 5

If you need ten-round magazines and want a few for training, the ETS 10-rounder is the cheapest option we found, from $10.99 at GunMag Warehouse to $21.99 at Palmetto State Armory on October 16, 2026.

It’s the same translucent polymer as the 19-rounder, flush with the grip. I’d still carry factory magazines, but these are a cheap way to own enough magazines to practice reloads properly.

Best For: Training magazines in 10-round states, bought by the handful.

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7. IMI Defense 20-Round Magazine: Best Polymer 20-Rounder

• Capacity: 20
• Body: Polymer
• Magazine catch: Standard factory catch
• Fits: Glock 43X, 48 and PSA Dagger Micro
• Price on October 16, 2026: About $38

Reliability	4 / 5
Capacity	5 / 5
Value	3 / 5
Compatibility	4 / 5
Availability	3 / 5

IMI Defense make a 20-round polymer magazine listed for the Glock 43X, the 48 and the PSA Dagger Micro. Being polymer, it doesn’t need a steel catch, which makes it the easiest way to get twenty rounds into a 43X without changing parts.

Optics Planet had it at $38.39 on October 16, 2026 in black or flat dark earth. That’s twice the price of the ETS 19, so it’s for owners who want the extra round and a different feel, not a budget buy.

Best For: Twenty-round backup magazines without a steel catch.

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8. Derya DY9Z 15-Round Magazine: Alternative 15-Rounder

• Capacity: 15
• Body: Steel body
• Magazine catch: Check the listing
• Fits: Glock 43X and PSA Dagger Micro
• Price on October 16, 2026: About $26 to $30

Reliability	3 / 5
Capacity	4 / 5
Value	4 / 5
Compatibility	3 / 5
Availability	4 / 5

Derya’s DY9Z is listed for both the Glock 43X and the PSA Dagger Micro, and Sportsman’s Warehouse had it at $29.99 on October 16, 2026, with GrabAGun at $26.39.

It’s priced right next to GLOCK’s own fifteen-rounder, so the question is why you’d pick it. The honest answer is availability: if the factory magazine is out of stock where you shop, this is a reasonable stand-in. Test it in your gun before you carry it.

Best For: A fallback fifteen-rounder when factory magazines are out of stock.

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9. Tyrant CNC +4 Magazine Extension: Best Extension for Factory 10-Rounders

• Capacity: +4 (14 total)
• Body: Machined aluminum
• Magazine catch: Not affected
• Fits: GLOCK 43X and 48 factory 10-round magazines only
• Price on October 16, 2026: About $30 to $44

Reliability	4 / 5
Capacity	4 / 5
Value	3 / 5
Compatibility	2 / 5
Availability	5 / 5

Tyrant’s +4 extension turns a factory ten-round magazine into a fourteen-rounder, and it comes with a 10% power spring. If you already own a drawer full of factory tens, it’s a way to upgrade them.

Read the fitment line, though. Palmetto State Armory’s listing says it fits “Glock 48 & 43X OEM 10rd Magazines Only”. It won’t go on GLOCK’s new fifteen-round magazine, and at $29.99 to $43.99 in our feeds on October 16, 2026 it costs more than simply buying a factory fifteen. Check your state’s capacity rules before you add rounds, too.

Best For: Owners with several factory 10-round magazines who want more capacity from them.

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How Many Glock 43X Magazines Should You Own?

For a carry gun, three is a sensible minimum: one in the gun, one spare on your belt and one rotating out for practice. Carry the magazines you’ve actually shot, not the ones that just came out of the box, and replace a magazine that starts failing to lock the slide back or feed reliably.

Carry magazines versus range magazines

Keep your carry magazines to the most proven option, which for most owners is now GLOCK’s factory fifteen. Cheaper ETS or high-capacity magazines are great for range days, where a failure costs you a clearance drill rather than anything worse.

Check your state first

Several states limit magazine capacity, often to ten rounds. If you live in one, the factory ten-rounder and the ETS ten are your options, and extensions that add rounds may not be legal where you live. Check your state’s current rules before you buy.

Shopping for other Glock parts? See our best Glock slides guide or every Glock part we price on our Glock parts page.

Glock 43X Magazine FAQ