Glock 43X 2026 Review: Specs, Compliance & California Status

As a California-licensed firearms dealer, we get a lot of questions about carry-ready pistols that balance size, capacity, and reliability. For years, the Glock 43X has been a standout in the slimline category, but its 10-round capacity always felt like a compromise, especially in a state where that’s our legal maximum anyway. The aftermarket stepped in with solutions, but many shooters, including our team at Cal Guns Depot in Sacramento, prefer factory-original parts for critical components like magazines. For 2026, Glock has finally addressed this directly with a factory 15-round all-metal magazine (model GL79269). We’ve spent significant time testing this new configuration to see if it transforms the 43X into the definitive slimline carry option for California shooters.

What’s New for 2026: The Factory 15-Round Magazine

The headline update is the magazine. The new GL79269 is a 15-round, all-metal (steel) magazine with a polymer floorplate. It retains the same external dimensions as the original 10-round polymer magazine, meaning it fits flush with the bottom of the Glock 43X and Glock 48 frames. This is not a “+2” extension; it’s a complete redesign of the magazine body and follower to increase capacity within the same footprint. The suggested retail price is $32.73, which is competitive for a factory magazine of this type.

Why This Factory Magazine Matters in California

In our California market, magazine capacity is legally capped at 10 rounds for purchase and transfer. It’s crucial to understand that this new 15-round magazine cannot be sold, transferred, or manufactured for sale within the state. However, for those who legally possessed standard-capacity magazines during freedom week or who reside outside California, this factory option is a significant development. It also informs the design and evolution of the platform itself. For California-legal configurations, the 43X still ships with its standard 10-round magazines, and that is the only way we can transfer it through our FFL in Sacramento. The importance of the new magazine lies in its engineering; it represents Glock’s commitment to maximizing the platform’s potential within its slim frame, a benefit that trickles down to the overall quality and design focus of the pistol we can legally own.

Glock 43X Specs at a Glance

• Model: Glock 43X
• Caliber: 9x19mm
• Overall Length: 6.5 inches
• Height: 5.04 inches (with magazine)
• Width: 1.1 inches (slimline frame)
• Barrel Length: 3.41 inches
• Weight (Unloaded): 18.7 ounces
• Frame: Polymer, Gen5-style texture
• Slide Finish: nDLC
• Sights: Glock Standard (plastic) / Optional Glock Night Sights or Ameriglo CAP models
• Magazine Capacity (CA-Compliant): 10 rounds (Factory polymer magazine)
• Magazine Capacity (New 2026 Factory Option): 15 rounds (GL79269, not CA-legal for sale/transfer)

Handling and Range Performance

We tested the Glock 43X with both its standard 10-round magazines and the new 15-round factory magazines. The core shooting experience remains unchanged, which is to say, excellent for its size. The slim 1.1-inch width provides a secure, comfortable grip for a wide range of hand sizes. The Gen5-style grip texture offers a solid purchase without being abrasive against the skin, a consideration we appreciate for everyday carry, even in the drier climates around Sacramento.

Recoil management is surprisingly good for a subcompact. The low bore axis and solid grip contact make follow-up shots quick and controllable. We ran several hundred rounds of 115gr and 124gr FMJ range ammunition, along with a mix of common defensive hollow points. Reliability was flawless with the factory 10-round magazines, as we’ve come to expect from Glock. With the new 15-round metal magazines, we experienced a few initial failures to feed during the first two magazine loads, which is not uncommon with stiff new springs. After a brief break-in period of loading and unloading, the magazines functioned without issue for the remainder of our testing.

The trigger is the standard Glock “Safe Action” with a consistent ~5.5 lb break. It’s serviceable and reliable out of the box. The sights are the typical plastic Glock U-dot, which are functional but are the first component many owners choose to upgrade.

Comparison: Glock Factory vs. Shield Arms S15 Magazines

The Shield Arms S15 magazine has been the go-to aftermarket solution for increasing 43X/48 capacity for several years. Having tested both, here’s our direct comparison:

• Construction: Both are all-metal. The Glock magazine uses a steel body with a polymer floorplate, while the S15 is all steel, including a metal floorplate.
• Reliability: In our tests, the new Glock factory magazine demonstrated the same level of reliability as the factory 10-rounders once broken in. The Shield Arms magazines have a strong track record but, like any aftermarket part, may require tuning (specifically, the magazine catch often needs to be swapped for a metal one) and can be ammunition-sensitive for some users.
• Fit: The Glock magazine is a true flush fit. Some S15 generations have had slight variations in baseplate dimensions.
• California Context: This is key. Neither magazine is legal to buy, sell, or transfer in California. The Shield Arms magazine is also subject to the same restrictions. The primary advantage of the Glock factory magazine is that it is a factory-original part, which many shooters trust for defensive use and which may have better long-term parts and support availability.

Holster Compatibility and Everyday Carry

A major advantage of the new factory magazine is that it doesn’t alter the pistol’s footprint. Because it fits flush, every holster designed for the Glock 43X will work without modification, whether you’re using the 10-round or the new 15-round magazine. This is a practical benefit over many aftermarket options that use extended baseplates. For California residents carrying under a CCW permit, the 43X’s slim profile is a major advantage for concealment, especially in warmer weather where lighter clothing is common. The pistol disappears easily in a quality inside-the-waistband holster.

What’s in the Box

• Glock 43X Pistol
• Two (2) 10-round factory polymer magazines (California-compliant configuration)
• Speed Loader
• Glock Hard Case
• Cable Lock
• Owner’s Manual and relevant paperwork
• Note: The new GL79269 15-round magazine is sold separately and is not included with the pistol, especially not in a California transfer.

California Roster and Transfer Notes

The Glock 43X is not on the California Roster of Handguns Certified for Sale. This means it cannot be sold as new by a dealer to a standard retail customer. The primary avenues for obtaining a Glock 43X in California are through a Private Party Transfer (PPT) from an individual who already owns one legally, or via a law enforcement exemption. As a dealer, we process these PPT transfers regularly. It is critical that any PPT for a 43X in California involves only the pistol in its compliant configuration—with its 10-round magazines. Any discussion of non-compliant magazines is separate and cannot be part of the firearm transaction. Always ensure your transfers are handled through a licensed FFL, like our team at Cal Guns Depot, to maintain full compliance.

Pros and Cons

Pros:

• Excellent slim profile ideal for concealed carry.
• Proven Glock reliability and aftermarket support.
• New factory 15-round magazine (for those who can legally possess it) maximizes capacity without increasing size.
• Comfortable grip and manageable recoil for its size.
• Perfect holster compatibility regardless of magazine choice.

Cons:

• Not on the CA Roster, available only via PPT or LE exemption.
• The new 15-round factory magazine is illegal to purchase or transfer within California.
• Standard plastic sights are a weak point.
• The trigger is functional but often benefits from aftermarket polish or upgrades.

Frequently Asked Questions

Is the Glock 43X with the 15-round magazine California legal?

No. The pistol itself is not on the roster and can only be acquired via Private Party Transfer (PPT). The new 15-round magazine (GL79269) cannot be legally manufactured, sold, or transferred within the state of California due to its capacity. A PPT of a Glock 43X must involve the pistol with its legally compliant 10-round magazines.

Can I buy the new Glock 15-round magazine in California?

No. It is a felony to manufacture, import, keep for sale, offer for sale, give, or lend any magazine capable of holding more than 10 rounds in California. This includes the new Glock factory magazine and all similar aftermarket options like the Shield Arms S15.

Will the new magazine work in my older Glock 43X?

Yes. The GL79269 magazine is designed to be compatible with all Glock 43X and Glock 48 models. The magazine well dimensions are identical.

Do I need a new magazine catch for the factory metal magazine?

Glock states it is not required. The factory polymer magazine catch is designed to work with the new metal magazine. This is a key difference from some aftermarket metal magazines, which often require a metal catch to prevent premature wear.

Is the Glock 43X a good choice for a California CCW?

If you can legally acquire one via PPT and it is approved by your local issuing authority (sheriff or police chief), the Glock 43X is an outstanding CCW candidate. Its slim width makes it very easy to conceal, and its 10-round capacity is the standard for California. Its reliability and simplicity are major assets for a defensive firearm.

How does it compare to the Glock 19 for carry?

The Glock 19 is wider (1.34″ vs. 1.1″) and holds 15 rounds in its standard configuration (10 in CA). The 43X is significantly slimmer, which makes it more comfortable for all-day concealed carry for many people. The trade-off is a slightly shorter grip and barrel. The 19, if you can conceal it, offers better shootability and a higher standard capacity outside of CA restrictions.

Final Thoughts

The 2026 update to the Glock 43X platform, centered on the new factory 15-round magazine, solidifies its position as a top-tier slimline carry pistol. For the national market, it solves the capacity compromise. For the California shooter, the core virtues of the 43X remain: a supremely concealable, reliable, and shootable 9mm pistol that operates within our state’s 10-round limit. While the path to ownership here is more complex due to the roster, its popularity in the secondary PPT market is a testament to its quality. If you are looking for a slim, dependable carry gun and are navigating the PPT process, the Glock 43X deserves serious consideration.

Where to Buy

As a roster-exempt pistol, the Glock 43X is available in California through Private Party Transfers. If you are looking to initiate or complete a PPT for a Glock 43X, or have questions about the process and compliance, we are here to help. Contact Cal Guns Depot in Sacramento to discuss PPT availability and to ensure your transfer is handled correctly and in full compliance with all California laws.