Glock G34: Features, Specifications & Complete Review

The Glock G34 is a long-slide 9mm pistol designed with target shooting and competition in mind. Its extended barrel, longer slide and extended sight radius distinguish it from shorter Glock models.

The G34 has been part of Glock’s lineup for many years. In particular, it has become well known in shooting sports such as IPSC.

Furthermore, Glock has produced Gen4 and Gen5 versions of the G34. The G34 Gen5 MOS adds Glock’s Modular Optic System for compatible optics.

What Is the Glock G34?

The Glock G34 is a 9x19mm long-slide pistol.

Unlike the shorter Glock 17, the G34 uses a longer barrel and slide. As a result, it has a longer sight radius and a different overall profile.

Glock says the G34 was developed with target engagement and accuracy in mind. It has subsequently become widely used in competitive shooting sports.

The model is therefore different from Glock’s compact and subcompact pistols. Instead, the G34 focuses on a longer configuration while retaining the familiar Glock design.

Glock G34 Specifications

The current Glock G34 product information lists the following specifications:

• Caliber: 9x19mm
• System: Safe Action
• Standard magazine capacity: 17 rounds
• Optional capacities: 19, 24, 31, 33 and 10 rounds
• Barrel length: 5.31 inches
• Overall length: 8.82 inches
• Slide length: 8.15 inches
• Overall width: 1.30 inches
• Height with magazine: 5.47 inches
• Weight without magazine: 655 g / 23.10 oz
• Trigger pull: 24 N

These figures are from Glock’s current technical information. However, Glock notes that specifications are rounded and may change without notice.

Glock G34 Barrel

One of the defining features of the G34 is its 5.31-inch barrel.

For comparison, the Glock 17 has a shorter barrel. Therefore, the G34 has a noticeably longer slide and barrel assembly.

The longer configuration also produces a longer sight radius. Glock lists a polymer-sight radius of approximately 7.56 inches for the current G34 specifications.

As a result, the G34 has a profile that is particularly associated with target and competition shooting.

Glock G34 Long-Slide Design

The G34 uses an extended slide that measures approximately 8.15 inches.

This is longer than the slide used on many other Glock models. Consequently, the G34 has a distinctive appearance within the Glock lineup.

The extended slide works together with the longer barrel and sight radius. In addition, the longer configuration is one of the main reasons the G34 became popular in competitive shooting.

Glock specifically describes the G34 as having an extended barrel, longer slide dimensions and an elongated distance between the sights.

Glock G34 Gen5

The Glock G34 Gen5 includes several design features associated with Glock’s fifth-generation pistols.

These features include:

• Glock Marksman Barrel
• Front slide serrations on applicable versions
• nDLC slide finish
• Flared magazine well
• Reversible magazine catch
• Ambidextrous slide stop lever
• Updated frame texture
• Modular Backstrap System
• Removal of traditional finger grooves

Therefore, the Gen5 G34 is more than simply a longer version of another Glock model. It incorporates several changes introduced across the Gen5 family.

Glock Marksman Barrel

The Glock Marksman Barrel, commonly called the GMB, is another important Gen5 feature.

Glock describes the GMB as a match-grade barrel with enhanced rifling. Consequently, it forms part of the accuracy-focused design of Gen5 models.

However, real-world accuracy depends on several factors. Ammunition, sights, optics, shooting conditions and the individual firearm can all affect results.

Glock G34 MOS

The Glock G34 MOS is an optic-ready version of the model.

MOS stands for Modular Optic System. The system allows compatible optics to be mounted using Glock’s factory optic interface.

The G34 Gen5 MOS was added to Glock’s Gen5 family in 2018. Glock described the model as part of its competition-oriented pistol range.

The MOS configuration therefore gives the G34 a modern option for shooters interested in using an electronic sight.

It is worth noting that Glock’s 2026 portfolio update lists the G34 Gen5 MOS among models scheduled for discontinuation in 2026. Availability can therefore vary by market and inventory.

Glock G34 Gen5 Features

The Gen5 G34 combines several features in one platform.

Flared Magazine Well

The flared magazine well is part of the Gen5 design. It creates a wider opening around the magazine area.

Ambidextrous Slide Stop Lever

The ambidextrous slide stop lever provides controls on both sides of the pistol.

Reversible Magazine Catch

The magazine catch can be configured for different user preferences. As a result, the design can accommodate both right- and left-handed users more easily.

Modular Backstrap System

The Modular Backstrap System allows the grip configuration to be changed.

Glock offers different backstrap options within its Gen5 system. Therefore, users can adjust the grip circumference to better suit their hands.

Gen5 Frame Texture

The Gen5 frame uses an updated texture compared with earlier Glock generations.

The finger grooves found on some earlier Glock frames were also removed. Consequently, the Gen5 grip has a different shape and feel.

Glock G34 Dimensions

The Glock G34 has the following listed dimensions:

• Overall length: 8.82 inches
• Slide length: 8.15 inches
• Overall width: 1.30 inches
• Height: 5.47 inches
• Barrel length: 5.31 inches

The long-slide design is immediately noticeable when the G34 is compared with shorter Glock models.

Its longer overall length also contributes to its distinctive competition-oriented profile.

Glock G34 Weight

The current Glock specifications list the G34 at 655 grams, or approximately 23.10 ounces, without a magazine.

With an empty magazine, Glock lists the weight at 735 grams. With a loaded magazine, the listed figure is 945 grams, although loaded weight can vary depending on ammunition.

Therefore, the G34 is a relatively substantial pistol compared with Glock’s smaller models.

Glock G34 for Competition

Competition shooting is one of the areas most closely associated with the G34.

Glock states that the model has found widespread use in IPSC and other shooting sports. The longer barrel, extended slide and longer sight radius are central parts of its design.

Independent testing has also examined the G34 Gen5 MOS in competition-style settings. One review reported extensive range testing and described the pistol as suitable for competition divisions.

However, competition performance depends on the shooter, ammunition, equipment and specific rules of the discipline.

Glocks G34 Reliability

Reliability has long been an important part of the Glock brand.

Independent testing of the G34 Gen5 MOS has reported positive reliability results. For example, one published test fired hundreds of rounds during competition-style testing without a malfunction.

Nevertheless, no mechanical product should be considered completely failure-proof.

Ammunition quality, maintenance and individual firearm condition can all affect reliability. Therefore, independent testing should be viewed as useful evidence rather than a guarantee for every example.

Glocks G34 Accuracy

The G34 was specifically developed with accuracy and target engagement in mind.

Its longer barrel and sight radius are important parts of this design. In addition, the Gen5 version uses the Glock Marksman Barrel.

Independent testing of the G34 Gen5 MOS has also reported strong accuracy during range sessions. However, results will naturally vary between shooters and test conditions.

For this reason, it is better to describe the G34 as an accuracy-focused Glock design rather than promise a specific level of performance.

Glocks G34 vs Glock 17

The Glock G34 and Glock 17 are both full-size 9mm pistols. However, the G34 has a longer barrel and slide.

The G34 uses a 5.31-inch barrel, while the standard Glock 17 has a shorter configuration.

As a result, the G34 has a longer overall length and sight radius.

The Glock 17 is therefore the more compact of the two, while the G34 has a stronger focus on its long-slide design and competition heritage.

Glocks G34 vs Glock G35

The G34 and G35 share a similar long-slide concept. However, their calibers are different.

The G34 is chambered in 9x19mm, while the G35 has traditionally been associated with .40 S&W.

Therefore, the G34 is the 9mm option within this particular long-slide Glock comparison.

Glocks G34 Pros and Cons

Pros

• Long-slide 9mm design
• 5.31-inch barrel
• Extended sight radius
• Gen5 features on current Gen5 versions
• Glock Marksman Barrel
• MOS configuration available
• Strong competition history
• Modular grip options

Cons

• Longer than compact Glock models
• Larger overall profile
• Heavier than smaller Glock pistols
• Not every configuration remains in current production
• Availability may vary as Glock updates its product portfolio

Frequently Asked Questions

Is the Glocks G34 a 9mm?

Yes. The Glock G34 is chambered in 9x19mm. Glock lists a standard magazine capacity of 17 rounds.

How long is the Glocks G34 barrel?

The current G34 specification lists a 5.31-inch barrel.

What is the Glocks G34 used for?

The G34 was developed with target engagement in mind and is widely associated with competitive shooting sports.

What does G34 MOS mean?

G34 MOS refers to a G34 configuration equipped with Glock’s Modular Optic System, which provides an optic-ready setup.

Is the Glocks G34 Gen5?

Yes. Glocks has produced the G34 as a Gen5 model, including the G34 Gen5 MOS. Glock’s 2026 portfolio update, however, lists the G34 Gen5 MOS among models scheduled for discontinuation in 2026.

What is the difference between the Glocks G34 and Glocks 17?

The main difference is the slide and barrel configuration. The G34 has a longer 5.31-inch barrel and longer slide, giving it a longer overall profile and sight radius.

Final Thoughts

The Glocks G34 is one of the best-known long-slide pistols in Glock’s lineup.

Its 9x19mm chambering, extended barrel, longer slide and extended sight radius give it a distinctive role. Furthermore, Gen5 versions add features such as the Glock Marksman Barrel, flared magazine well and ambidextrous controls.

The G34 also has a strong connection with competitive shooting. Over time, the model has become a recognizable choice within IPSC and other shooting sports.

For SEO purposes, the strongest approach is to keep this page informational. Focus on the model’s history, specifications, design and Gen5 features rather than purchase-focused language.

Overall, the Glocks G34 remains an important long-slide 9mm model and an interesting part of Glock’s evolution.