Glock UX4350203FRMOS G43X MOS | 9mm | 15+1

The Glock G43X MOS is a slimline, optic-ready compact pistol designed around a comfortable grip profile and a subcompact-slim slide. The MOS (Modular Optic System) slide is precision-machined to accept popular micro red-dot footprints, and the pistol features Glock’s match-grade Marksman Barrel (GMB) from the Gen5 family. For an optic that pairs well with this platform, consider a compact footprint red dot such as the Holosun 507K (compact MOS-compatible footprint) for reliable, low-profile mounting under $1,000.

Applications: concealed carry for users who want a slim profile with optic capability, and range training/competition where a lightweight, optic-ready pistol is preferred.

Product Specifications

• The manufacturer is Glock.
• The model and part number are G43X MOS (UX4350203FRMOS).
• The caliber is 9mm.
• The magazine capacity is 15+1.
• The product includes 2 x 15-Round magazines.
• The frame material is Polymer.
• The slide finish is nDLC.
• The slide is described as serrated with optic cut (MOS).
• The sights are Fixed.
• The safety system is Firing Pin/Trigger Block.
• The muzzle is Non-Threaded.
• The weight is 1.552 lbs.
• The overall length is 5.47″.
• The magazine type is Removable.
• The UPC is 764503072864.

The G43X MOS blends the slimline Glock grip with an optic-ready slide and a minimal profile that makes it easy to carry while still offering a full-size magazine capacity in many jurisdictions. The combination of a polymer frame, fixed sights, and MOS-cut slide gives shooters a low-weight platform that adapts to modern miniature red-dot optics and practical accessory use. If you want a compact pistol that accepts contemporary micro red-dot sights and retains straightforward ergonomics, this model answers that need without unnecessary complexity.

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