Glock 34 MOS Gen5 9mm 17rd 5.31″ Pistol PA343S103MOS – 9mm

Description

Product Overview

The Glock 34 MOS Gen5 9mm pistol represents the pinnacle of Glock’s competition-ready design, engineered for the shooter who demands superior accuracy and modularity. As the longest-slide model in the Gen5 lineup, this 9mm handgun features a 5.31-inch Marksman Barrel and a Modular Optic System (MOS) slide, making it a premier choice for practical competition, dynamic range training, and duty use. Its design prioritizes a flat shooting experience, enhanced sight radius, and the ability to directly mount a reflex sight without aftermarket machining. The Glock 34 MOS Gen5 is tailored for the serious sport shooter, the dedicated firearms instructor, and the discerning user seeking a highly adaptable and reliable performance pistol right out of the box.

Key Features

• Gen5 MOS (Modular Optic System) Platform: The slide is precision-milled from the factory to accept a wide array of popular micro red dot sights. This integrated system uses adapter plates for a secure, direct mount, eliminating the need for third-party slide machining and preserving the pistol’s finish and structural integrity.
• Glock Marksman Barrel (GMB): The extended 5.31″ cold hammer-forged barrel features enhanced polygonal rifling and an improved barrel crown. This combination is engineered for consistent bullet engagement and reduced muzzle flip, resulting in demonstrably improved accuracy and tighter shot groupings at distance compared to previous generations.
• nDLC Finish & No Finger Grooves: The slide and barrel feature a nDLC (diamond-like carbon) finish, a specification noted for its exceptional hardness and corrosion resistance. The frame utilizes the Gen5’s versatile smooth profile, removing finger grooves to accommodate a wider variety of hand sizes and grip preferences.
• Ambidextrous Controls & Manual Safety Option: Designed for universal operation, this model includes ambidextrous slide stop levers. As indicated by the “S” in its model code (PA343S103MOS), it is also equipped with a manual thumb safety, providing an additional administrative safety layer for users who require or prefer it.
• Competition-Oriented Dimensions: The extended slide and barrel provide a longer sight radius for improved precision with iron sights, while the balanced weight of 23.46 ounces (unloaded) helps manage recoil impulse. The standard magazine capacity is 17 rounds of 9mm, ensuring ample rounds for course stages or training drills.
• Enhanced Internals & Magazine Well: The Gen5 update includes the GLOCK Modular Backstrap System (MBS), allowing for a customizable grip circumference. Internally, a flared magazine well facilitates faster reloads, and the upgraded trigger components aim for a consistent pull from first to last shot.

Performance & Applications

Practical/Competition Shooting (USPSA, IDPA): The Glock 34 is a legend in action pistol sports. Its extended barrel and slide weight dampen muzzle rise, allowing for faster, more controlled follow-up shots. The MOS platform lets competitors run a red dot sight in Carry Optics or Open divisions, while the superb out-of-the-box trigger and ergonomics make it a dominant force in Production class. The reliable 17+1 capacity is ideal for most stage designs.

Advanced Training & Instructional Use: For firearms instructors and dedicated students, the G34 MOS Gen5 serves as an exceptional training tool. The longer sight radius and flat shooting characteristics provide clear feedback on fundamental marksmanship errors. The ability to mount a red dot also facilitates training on modern sighting systems. Its renowned Glock reliability under high round counts ensures the focus stays on training, not firearm malfunctions.

Modular Duty & Home Defense Option: While its size may preclude concealed carry for some, the G34 MOS is a viable choice for a modular duty pistol or a primary home defense firearm. The manual safety option meets specific organizational requirements. When paired with a weapon-mounted light and an optic, it becomes a highly capable, precision-oriented system for defensive scenarios where size is less constrained.

About Glock

Glock Ges.m.b.H. is not merely a firearm manufacturer; it is the engineering firm that revolutionized modern handgun design with the introduction of the Glock 17 in 1982. Founded by Gaston Glock, the company’s core philosophy centers on pragmatic innovation, relentless reliability, and simplicity of operation. Glock’s expertise is proven daily in the hands of military units, law enforcement agencies across the globe, competitive shooters, and responsible citizens. Their “Safe Action” system set a new standard for secure, consistent operation. Every Glock pistol, including this Gen5 model, is the product of decades of iterative refinement informed by real-world feedback from the most demanding users. When you choose a Glock, you are selecting a tool built on a legacy of proven performance, where every component serves a purpose and endurance is engineered in from the start.

Make Your Decision

The Glock 34 MOS Gen5 is a purpose-built instrument for the shooter who views a handgun as a platform for performance. It makes no compromises on size, because its design intent is ultimate shootability. The decision hinges on your requirement for a competition-ready, optics-capable pistol that delivers exceptional accuracy and Gen5 enhancements straight from the case. If your priorities include a longer sight radius, a flat-shooting 9mm platform, and the factory-engineered flexibility to mount an optic, this pistol stands as a definitive solution. Evaluate its specifications against your intended use, and you’ll find a tool engineered to meet the challenge.

Technical Specifications

Frequently Asked Questions