For shooters seeking a durable, optics-ready platform with proven ergonomics and upgrade potential, this pistol checks many boxes. It combines a familiar Glock chassis with performance-oriented accessories that make it ready for range days or duty roles.

GLOCK G40 GEN 4 MOS

Key features on this used GLOCK G40 GEN 4 MOS

This listing is a used firearm in very good condition and comes well-equipped: two 15-round magazines, factory box, an extra KKM match grade barrel in 40 S&W, and the original user manual. The pistol is also fitted with Trijicon night sights and a Vortex Viper red dot — an attractive package for those who want an out-of-the-box optic-ready pistol.

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Why the KKM match barrel matters

KKM match grade barrels are precision-machined to tighter tolerances than standard barrels, which typically translates into improved accuracy and more consistent groupings. Coupled with the .40 S&W chambering, this setup offers a balance between terminal energy and controllable recoil — useful for qualified shooters who prefer the .40 round for duty or personal defense applications.

Optics and low-light capability

The MOS (Modular Optic System) cut on the G40 Gen 4 allows secure mounting of the Vortex Viper red dot shown on this pistol. A quality red dot speeds target acquisition at close to moderate ranges, while Trijicon night sights provide dependable sighting in low-light conditions without needing battery power. Together they create a versatile sighting system for both training and operational use.

Fit, ergonomics, and value

Gen 4 Glock features — interchangeable backstraps, a dual recoil spring assembly, and an improved grip texture — make this pistol adaptable to different hands and shooting styles. At a listed price of $799.99 and including spare magazines and the match barrel, this package represents strong value for someone seeking a ready-to-run semi auto platform.

For full specifications, additional images, and to complete a purchase through our retail partner, View product details and pricing. Check current availability and secure this optics-ready GLOCK G40 GEN 4 MOS with its match barrel and sighting package today: Check availability.

People Also Ask

What makes this product stand out from competitors?

This product offers superior quality and innovative features that set it apart in the market. Its design focuses on both performance and reliability, making it a top choice for professionals and enthusiasts alike.

Is this product suitable for beginners?

Yes, this product is designed with user-friendly features that make it accessible to beginners while still offering advanced capabilities for experienced users.

What warranty or support is available?

The product comes with comprehensive warranty coverage and excellent customer support to ensure your satisfaction and peace of mind.

How does this compare to similar products in its price range?

This product offers exceptional value for its price point, providing features and quality that typically cost significantly more in comparable alternatives.

What maintenance is required?

Minimal maintenance is required thanks to the product’s durable construction and quality materials. Regular cleaning and occasional inspections will keep it performing optimally.