Glock PX4350B03FRMOS8A4 G43X MOS 9mm 3.41" Pistol w/Aimpoint COA, 15-Round

Glock PX4350B03FRMOS8A4 G43X MOS 9mm 3.41" Pistol w/Aimpoint COA, 15-Round

The Glock G43X MOS PX4350B03FRMOS8A4 is a slimline 9mm pistol built around a 3.41-inch Glock Marksman Barrel, MOS optics-ready slide, accessory rail, and factory-installed Aimpoint COA 3.5 MOA red-dot sight. This configuration combines the narrow G43X frame with a factory optic package and a 15-round magazine format.

The included Aimpoint COA is the defining feature of this model. Rather than starting with a standard G43X MOS and adding an optic separately, this version is supplied with the COA as part of the factory configuration, giving the pistol an enclosed-emitter red-dot system from the outset.

The slimline frame, longer G43X grip, 3.41-inch barrel, accessory rail, and optics-ready upper keep the pistol centered on the G43X format while adding a higher-capacity magazine setup and factory-mounted optic.

Slimline G43X MOS Design

The G43X MOS uses Glock's slimline frame rather than the wider double-stack frame found on models such as the G19. Its proportions are built around a narrow grip and compact 3.41-inch upper while still providing a longer gripping surface than the smaller G43.

That combination is what defines the G43X: a slim frame with enough grip length for a full firing grip, paired with a compact slide and barrel assembly.

3.41-Inch Glock Marksman Barrel

The pistol uses a 3.41-inch Glock Marksman Barrel matched to the compact G43X slide. The barrel is part of Glock's factory slimline configuration rather than an aftermarket component.

Its shorter length keeps the upper assembly compact while the longer G43X grip provides additional hand contact below the slide.

Factory-Installed Aimpoint COA

This model includes an Aimpoint COA with a 3.5 MOA red dot as part of the factory package. The COA uses an enclosed-emitter design that protects the emitter inside the optic housing rather than leaving it exposed.

Because the optic is supplied with this exact G43X MOS configuration, it is part of the model's factory setup rather than an accessory added after purchase.

MOS Optics-Ready Slide

The black steel slide is configured for optic use and incorporates serrations for manual manipulation. In this package, the optic interface is used to mount the included Aimpoint COA.

The factory optic setup removes the need to machine the slide or select an unrelated aftermarket mounting arrangement.

Slimline Polymer Frame with Accessory Rail

The black polymer frame uses Glock's slimline dimensions and incorporates an accessory rail ahead of the trigger guard for compatible compact lights and other rail-mounted accessories.

The rail adds mounting capability without changing the narrow frame format that distinguishes the G43X from Glock's wider compact pistols.

15-Round Magazine Configuration

This configuration is listed with a 15-round magazine capacity, giving the G43X MOS a higher-capacity setup while retaining the slimline frame and compact upper.

The 15-round format is specific to this factory package and should not be assumed from earlier G43X configurations commonly associated with lower-capacity magazines.

Key Features

• Glock G43X MOS slimline 9mm pistol
• 3.41-inch Glock Marksman Barrel
• Factory-installed Aimpoint COA optic
• 3.5 MOA red dot
• Enclosed-emitter optic design
• MOS optics-ready serrated steel slide
• Black polymer slimline frame
• Integrated accessory rail
• Glock Safe Action system
• 15-round magazine configuration

Specifications

• Manufacturer: Glock
• Model: G43X MOS
• MPN: PX4350B03FRMOS8A4
• UPC: 764503073021
• Item Number: 195514
• Caliber: 9mm Luger
• Action: Semi-Automatic
• Operating System: Glock Safe Action
• Frame: Black Slimline Polymer
• Barrel: Glock Marksman Barrel
• Barrel Length: 3.41"
• Slide: Black Steel, MOS Optics Ready, Serrated
• Optic: Aimpoint COA
• Dot Size: 3.5 MOA
• Accessory Rail: Yes
• Magazine Capacity: 15 Rounds
• Listed Capacity: 15+1

The G43X MOS Aimpoint COA Configuration

The defining feature of this G43X MOS is the combination of Glock's slimline 9mm platform and the factory-installed Aimpoint COA. The 3.41-inch Glock Marksman Barrel and narrow frame establish the pistol's compact proportions, while the longer G43X grip provides more hand contact than the smaller G43 format.

The MOS slide, enclosed-emitter COA optic, accessory rail, and 15-round magazine configuration complete the package. For buyers comparing G43X variants, those features separate this model from a standard G43X MOS sold without an optic or with a lower-capacity magazine setup.

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