Glock 43X vs. Glock 43: Size, Capacity, Features and How They Compare

The Glock 43 and Glock 43X are two slim 9mm pistols that can look remarkably similar at first glance. They use the same 3.41-inch barrel length, share Glock’s familiar operating system, and belong to the company’s Slimline family. Once you look at the frames, magazines, grip dimensions, capacity, and available configurations, however, the differences become much more significant.

The simplest explanation is this: the Glock 43 is the smaller handgun, while the Glock 43X combines a similarly short slide with a longer grip, more gripping surface, and substantially greater magazine capacity.

That distinction makes the Glock 43 vs. Glock 43X comparison less about which handgun is universally “better” and more about which combination of dimensions and features makes sense to the individual owner.

At Federal Firearms Co., we have been serving the Pittsburgh area since 1967. As a third-generation, family-run firearms dealer with gunsmiths experienced in working on Glock handguns, we have seen firsthand why comparing pistols on a specification sheet is only the beginning of the decision-making process.

What Is the Main Difference Between the Glock 43 and Glock 43X?

The primary difference between the Glock 43 and Glock 43X is the frame and grip size.

The Glock 43 has a shorter grip and was designed around a very compact overall package. The Glock 43X uses a taller frame that provides additional gripping surface and accommodates a higher-capacity magazine.

Both have a 3.41-inch barrel, but Glock lists the G43 at 4.25 inches tall and the G43X at 5.04 inches tall. The G43 is 1.06 inches wide, while the G43X measures 1.10 inches wide. Overall length is 6.26 inches for the G43 and 6.50 inches for the G43X.

That means the most important physical difference is not a dramatically longer barrel or slide. It is what happens below the slide, particularly in the grip.

*Published Glock weight figures can vary with configuration and magazine generation. Glock’s 2023 specifications listed the G43X with its then-standard 10-round magazine.

Is the Glock 43 Smaller Than the Glock 43X?

Yes. The Glock 43 is smaller than the Glock 43X, particularly through the grip.

The Glock 43 is approximately 0.79 inches shorter in height. That may sound like a small measurement, but handgun dimensions do not need to differ by several inches to produce a noticeably different feel.

The shorter G43 grip is a major reason the firearm feels so compact. Glock itself has described the G43X as combining a fuller-size grip with a short, subcompact-length slide.

The G43X gives the user’s hand more frame to contact. Someone with larger hands may immediately notice that difference. Another person may place greater value on the shorter overall height of the G43.

This illustrates why searching online for “handguns near me” can only take a customer so far. Dimensions, photographs, and specifications help narrow the field, but physically comparing grip size and ergonomics at a knowledgeable local gun store can reveal differences that are difficult to appreciate from a screen.

Glock 43 vs. Glock 43X for Size and Concealment

For someone whose priority is minimizing the physical dimensions of the firearm, the Glock 43 has the advantage.

It is shorter in both overall length and height and slightly narrower than the 43X.

The height difference deserves particular attention. Although the two models have the same barrel length, the G43X’s grip extends farther downward. That additional frame length is what creates space for greater magazine capacity and additional gripping surface.

The tradeoff is straightforward.

The Glock 43 prioritizes minimum size.

The Glock 43X accepts a taller grip in exchange for more grip area and substantially greater capacity.

There is no specification that determines which tradeoff is preferable for every person. Hand size, clothing, intended use, experience, and personal comfort all play a role.

How Many Rounds Does a Glock 43X Hold in 2026?

This is an area where many older Glock 43X comparison articles are now outdated.

Historically, the Glock 43X shipped with a 10-round factory magazine, while the Glock 43 used a standard six-round magazine.

In April 2026, Glock announced a new OEM 15-round Slimline magazine for the G43X and G48. Glock stated that G43X and G48 pistols would begin coming standard with the new 15-round magazines in May 2026. The new magazine uses a metal double-stack design and is designed to work with the standard magazine catch.

That creates an important distinction for anyone researching the Glock 43X today:

Older Glock 43X pistols and older Glock literature commonly reference a 10-round standard capacity. Current-production G43X pistols may be equipped from the factory with Glock’s newer 15-round magazine.

Because there are many existing 10-round G43X pistols in circulation, customers should verify the exact firearm and magazines being considered rather than assuming every G43X package is identical.

The Glock 43 remains fundamentally different. Glock’s published specifications have traditionally listed its standard magazine capacity at six rounds.

Are Glock 43 and Glock 43X Magazines the Same?

No. Glock 43 and Glock 43X magazines are not interchangeable simply because both pistols are slim 9mm Glocks.

The G43 uses a substantially shorter grip and its own magazine dimensions. The G43X’s taller and slightly wider frame was designed around a different magazine architecture.

This is an important distinction because someone comparing these handguns may initially assume that the G43X is simply a G43 fitted with a longer magazine. It is better understood as a related Slimline design with a different frame and magazine system.

The difference has become even more pronounced with Glock’s introduction of the new 15-round G43X magazine.

How Are the Glock 43 and Glock 43X Frames Different?

Although the two models share obvious family resemblance, their frames serve different priorities.

The Glock 43 uses a shorter Slimline frame intended to keep the overall handgun particularly compact. Its shorter grip also means less gripping surface.

The Glock 43X extends the grip to approximately 5.04 inches in total firearm height. When Glock originally introduced the G43X, the company specifically described it as combining a fuller-size grip length with a minimal Slimline profile.

For many customers, this is where handling the two pistols becomes more informative than reading another hundred specifications online.

The G43 can feel noticeably abbreviated in some hands. The G43X provides more area for the firing hand, but that longer grip also changes the handgun’s overall dimensions.

Neither result is inherently right or wrong. They represent two approaches to building a compact 9mm handgun.

Does the Glock 43X Have a Rail?

The answer depends on the specific Glock 43X configuration.

This is another topic where online answers can become confusing because Glock has produced multiple versions of the G43X.

Glock introduced MOS versions of the G43X and G48 with an optics-ready factory-milled slide and Glock’s Slimline mounting rail system. Glock describes the rail as allowing compatible accessories to mount ahead of the trigger guard.

The G43X MOS therefore should not be treated as identical to every standard G43X encountered in the market.

The original Glock 43 does not have Glock’s Slimline accessory rail.

For someone specifically looking for an optics-ready configuration or a frame with a factory rail, identifying the complete model designation matters.

What Category of Firearm Are the Glock 43 and Glock 43X?

Both the Glock 43 and Glock 43X are semi-automatic, striker-fired 9mm pistols in Glock’s Slimline family.

You will also see terms such as “subcompact,” “micro-compact,” “compact,” and “concealed carry pistol” used by manufacturers, dealers, reviewers, and firearm owners.

Those categories are useful, but they are not always applied consistently across brands.

Glock has referred to the G43X as having a subcompact slide and a compact Slimline frame. The company groups the G43, G43X, G48, G43X MOS, and G48 MOS together within its Slimline family.

For practical comparison, the actual measurements usually tell you more than debating whether a particular handgun deserves the label “micro-compact” or “subcompact.”

Do the Glock 43 and Glock 43X Have the Same Barrel?

Both models have the same published 3.41-inch barrel length.

That is significant because someone unfamiliar with the two pistols may expect the larger-looking G43X to have a much longer barrel. It does not.

The G43X’s additional size is concentrated primarily in its frame and grip. The two pistols therefore have more in common through the upper portion of their overall profiles than their different capacities might suggest.

Does the Glock 43X Feel Bigger Than the Glock 43?

Generally, yes.

Even though their widths differ by only about 0.04 inch, the taller G43X grip makes it feel like a more substantial handgun in the hand.

A person with larger hands may appreciate the extra gripping area. Someone prioritizing the smallest possible package may prefer the abbreviated dimensions of the G43.

Grip geometry is also one of the reasons we caution customers against making a firearm decision from numbers alone.

If you have spent time searching for “firearm dealers near me” because you are trying to decide between several compact pistols, a knowledgeable dealer can help you compare how those differences translate from a specification table to the actual firearm.

Federal Firearms has served generations of Pittsburgh-area firearm owners and provides both firearm sales and gunsmithing services, including specific service experience with Glock handguns.

Glock 43X vs. SIG Sauer P365XL

The SIG Sauer P365XL provides useful context because it takes a somewhat different approach to the micro-compact 9mm category.

SIG classifies the P365XL platform as micro-compact. The traditional P365XL configuration uses a 3.7-inch barrel and measures approximately 6.6 inches long, 4.8 inches high, and 1.1 inches wide. SIG’s published specifications for the original configuration list a 12-round magazine.

That places its general dimensions surprisingly close to the Glock 43X.

The P365XL is slightly longer overall and uses a longer barrel, while its listed 4.8-inch height is lower than the G43X’s 5.04 inches. Both are approximately 1.1 inches wide.

The designs diverge in other ways as well. The P365 family is built around SIG’s removable fire control unit and interchangeable grip-module concept. Glock uses its own polymer-frame architecture and familiar SAFE ACTION system.

For someone considering the Glock 43X vs. P365XL, dimensions and capacity are therefore only the first layer of the comparison. Grip shape, controls, sights, trigger characteristics, modularity, and individual preference create a very different experience between the two platforms.

Glock 43X vs. Smith & Wesson M&P Shield Plus

The Smith & Wesson M&P Shield Plus is another logical comparison for someone considering a slim 9mm handgun.

Smith & Wesson identifies the Shield Plus as a micro-compact, striker-fired 9mm. The traditional 3.1-inch model measures approximately 6.1 inches long, 4.6 inches high, and 1.1 inches wide. Smith & Wesson lists magazine configurations of 10+1 and 13+1 rounds for this model.

Compared with the Glock 43X, the Shield Plus is shorter in overall length and height while maintaining a similar published width.

The platforms also have noticeably different grip shapes and trigger designs. Select Shield Plus versions are optics-ready, while Smith & Wesson notes that the traditional Shield Plus does not have an accessory rail.

Here again, the specification table identifies differences worth investigating, but it does not determine which handgun will feel best to an individual user.

Glock 43 vs. Glock 43X vs. P365XL vs. Shield Plus

Here is the high-level comparison:

Specifications can vary by exact model, generation, magazine, and configuration. When comparing firearms, verify the specifications of the particular model being considered.

Who Might Prefer a Glock 43?

The Glock 43 makes the strongest case for itself when minimum dimensions are a primary consideration.

Compared with the G43X, it has the shorter grip, lower overall height, slightly narrower frame, and lower unloaded weight.

Someone specifically attracted to the Glock platform but looking for one of its smallest 9mm configurations may therefore continue to find the G43 appealing despite the development of newer, higher-capacity pistols.

Its tradeoff is obvious: the smaller frame means considerably less standard magazine capacity and less gripping surface than the G43X.

Who Might Prefer a Glock 43X?

The Glock 43X shifts the balance toward additional grip area and magazine capacity while retaining a slim profile and short barrel.

That makes the 43X an appealing comparison point for people who think the G43 feels too abbreviated but do not necessarily want to move to a larger traditional compact handgun.

The arrival of Glock’s factory 15-round magazine in 2026 also changes the capacity discussion substantially. Someone reading an older comparison that describes the G43X exclusively as a 10-round handgun should recognize that Glock’s current factory configuration has evolved.

MOS configurations further expand the feature set for people interested in an optics-ready slide and Slimline accessory rail.

Is the Glock 43 or Glock 43X Better?

Neither handgun is universally better. The Glock 43 prioritizes smaller dimensions, while the Glock 43X provides a larger grip and significantly greater capacity.

If you want the shortest grip and smallest overall package of the two, the G43 has the advantage.

If you value additional gripping surface and substantially greater factory capacity, the G43X provides those features while retaining a relatively slim design.

The better question is therefore not simply, “Which Glock is better?”

It is:

Which combination of size, grip, capacity, and features better matches what you want from the handgun?

That is also why comparing handguns in person can be useful.

Compare Handguns at a Local Gun Store in the Pittsburgh Area

Searching for “handguns near me,” “firearm dealers near me,” or a “local gun store” can produce plenty of options. The more important question is whether the shop can help you understand what separates similar firearms rather than simply point to what happens to be in the display case.

Federal Firearms Co. has been part of the Pittsburgh-area firearms community since 1967. The business traces its roots to Small Arms Manufacturing, a barrel manufacturer founded in Presto, Pennsylvania, in 1958, before Federal Firearms opened its wholesale and retail operation in 1967. Today, Federal Firearms remains a third-generation family-run business.

Our gunsmiths also work extensively with Glock handguns, giving our team experience with the platform that extends beyond simply reading the manufacturer’s specifications.

If you are comparing a Glock 43 vs. Glock 43X, or considering alternatives such as the SIG Sauer P365XL or Smith & Wesson M&P Shield Plus, visit Federal Firearms and talk with our team. Availability changes, but we can help you understand the differences among the models and evaluate the characteristics that matter to you.

Frequently Asked Questions About the Glock 43 and Glock 43X

What is the biggest difference between a Glock 43 and Glock 43X?

The biggest difference is the frame. The Glock 43 has a shorter grip and smaller overall height, while the Glock 43X has a taller grip that provides more gripping surface and accommodates higher-capacity magazines.

Is a Glock 43 smaller than a Glock 43X?

Yes. Glock lists the G43 at 6.26 inches long and 4.25 inches high compared with 6.50 inches long and 5.04 inches high for the G43X. The G43 is also slightly narrower at 1.06 inches compared with 1.10 inches for the G43X.

Do the Glock 43 and Glock 43X have the same barrel length?

Yes. Both have a published barrel length of 3.41 inches.

How many rounds does a Glock 43 hold?

Glock has traditionally listed the Glock 43 with a standard six-round magazine.

How many rounds does a Glock 43X hold?

Older G43X pistols and specifications commonly use a 10-round factory magazine. In 2026, Glock introduced a new OEM 15-round magazine and announced that the G43X would begin coming standard with it in May 2026.

Are Glock 43 and Glock 43X magazines interchangeable?

No. The pistols use different frame and magazine dimensions, so the G43X is not simply a G43 that accepts a longer version of the same magazine.

Does the Glock 43X have an accessory rail?

It depends on the configuration. Glock’s G43X MOS incorporates the company’s Slimline mounting rail along with an optics-ready slide. Buyers should verify the exact version of the G43X they are evaluating.

Is the Glock 43X considered a compact or subcompact handgun?

Glock places the G43X within its Slimline family and has described it as using a subcompact-length slide with a larger Slimline frame. Terms such as subcompact and micro-compact are not used identically by every manufacturer, so actual dimensions are often more useful for comparisons.

Is the Glock 43X bigger than the SIG Sauer P365XL?

They are different shapes rather than one being larger in every dimension. The P365XL is slightly longer overall at approximately 6.6 inches, while its listed 4.8-inch height is less than the G43X’s 5.04 inches. Both are approximately 1.1 inches wide.

Is the Glock 43X similar to the Smith & Wesson Shield Plus?

Yes, in the sense that both compete within the market for relatively slim, compact 9mm pistols. They differ in dimensions, magazine configurations, ergonomics, trigger design, and available features. The standard 3.1-inch Shield Plus is approximately 6.1 inches long and 1.1 inches wide with 10+1 and 13+1 magazine configurations.

Where can I compare handguns near Pittsburgh?

Federal Firearms Co. is a third-generation firearm dealer serving the Pittsburgh area. Customers comparing Glock, SIG Sauer, Smith & Wesson, and other handgun platforms can visit the shop to discuss available firearms, specifications, fit, and features with an experienced local team.