The long-slide, high-capacity semi-automatic pistol has become a staple for duty, competition, and defensive shooting when you need extra velocity and a larger magazine count. A reliable platform that balances durability, ergonomics, and straightforward safety features makes all the difference when a firearm must perform under stress.

GLOCK G40 GEN 4 MOS is purpose-built to deliver that combination: a long slide and barrel for improved velocity paired with Glock’s proven Safe Action system.

Key features that matter on the range and in the field

The GLOCK G40 GEN 4 MOS pairs a long slide and barrel to increase muzzle velocity and extend effective sight radius, which aids precision at distance. It offers high magazine capacity for duty or competition use. The firearm uses Glock’s Safe Action system: three automatic, independently operating mechanical safeties built into the fire control system that disengage sequentially as the trigger is pulled and automatically reengage when it is released. That provides a consistent trigger pull from the first round to the last.

Durability and ergonomics

The polymer frame with hardened steel slide rails keeps overall weight low while maintaining rugged service life. The grip angle and low weight make presentation and follow-up shots more intuitive. Controls such as the slide stop lever and magazine catch are sized and positioned for operation with the shooting hand, supporting efficient reloads and malfunctions handling.

Corrosion resistance and barrel construction

The slide and barrel receive Glock’s advanced surface treatment, resulting in a hard, matte finish that minimizes glare and significantly reduces wear and corrosion—even in saltwater environments. The mechanically locked, cold-hammer-forged barrel adds longevity and consistent accuracy. The extractor doubles as a loaded chamber indicator to comply with certain state requirements and offers both visual and tactile chamber status confirmation.

Purchase and specifications

Category: Semi Auto. Price: $1299.99. For those evaluating a long-slide, high-capacity pistol with modern safety engineering and a duty-proven platform, the GLOCK G40 GEN 4 MOS is worth consideration. View product details and pricing

If you want hands-on capability from a long-slide handgun built on a proven platform, Check current availability and specifications on our shop page where you can purchase directly through the retailer.

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