Glock G40 MOS: An Optic-Ready 10mm Powerhouse

by
posted on July 14, 2021
Glock G40 MOS

Glock introduced its Gen 4 G40 at the 2015 Shooting, Hunting and Outdoor Trade Show. The polymer-framed semi-auto pistol sports the familiar businesslike looks of the company’s other offerings, but this one stood out from the others.

For one thing it had a 6.02" barrel hiding under a long slide (9.02 inches long, to be precise). It also came with the company’s brand-new Modular Optics System (MOS), which made mounting red-dot or reflex sights on the gun fast and effortless—a money- and time-saving virtue enthusiasts have come to appreciate. Glocks with the system ship with their slide milled for optics and base plates that fit the most popular electronic pistol sights are included. The combination makes anchoring an optic DIY, rather than one requiting gunsmith intervention.  

The handgun’s overall is 9.49", a rather cumbersome figure for duty or carry. The setup is ideal for hunters, though, who are more interested in wringing the last bit of performance possible out a cartridge than concealment, and usually prefer an optic over iron sights.

The G40 may not be Glock’s best-known handgun, but it continues to be a popular choice among enthusiasts, for good reason. When B. Gil Horman reviewed one for American Rifleman shortly after its release, he concluded, “The Gen4 frames fit my hands more comfortably than the Gen3 models and the addition of the MOS feature is certainly a plus. The timing of the G40's arrival couldn't be better. Finally, we can enjoy a reasonably priced 10mm long slide with the rugged reliability of a Glock without the need for expensive aftermarket parts or gunsmithing.”

The G40 MOS is chambered in 10mm, magazine capacity is 15 cartridges and the magazine release is reversible. The modular backstrap allows owners to customize feel. The gun weighs 35.45 ozs. empty and—for those not interested in mounting an optic—the pistol ships with an adjustable, white U-notch sight at the rear with a white dot up front. Glock doesn’t list MSRPs, but the gun is running roughly $800 on several reputable FFL websites.

Latest

Springfield Armory XD M Elite 10 Mm OSP
Springfield Armory XD M Elite 10 Mm OSP

NRA Gun Of The Week: Springfield Armory XD-M Elite 4.5” OSP In 10 mm Auto

Watch American Rifleman staff on the range to learn about the 10 mm Auto-chambered XD-M Elite 4.5” OSP, one of the latest offerings in Springfield Armory's feature-rich lineup of Croatian-made pistols.

The Armed Citizen® Dec. 2, 2022

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

Rifleman Q&A: M1903 vs. M1903A1 Rifles

I’ve seen references to an M1903A1 rifle. I’ve looked around at a bunch of gun shows, and I have not found a rifle marked “M1903A1.” How does that variant differ from a standard M1903 rifle?

PrairieFire Emerges Following Front Sight Chapter 11 Filing

PrairieFire announced this week that the United States Bankruptcy Court for the District of Nevada confirmed the Chapter 11 plan of reorganization under which it will acquire 100 percent of Front Sight Management’s equity.

5 Common Grip & Stance Mistakes

Even for those who are seasoned and train regularly, sometimes mistakes can persist when it comes to shooting techniques. Here are five of the most common grip and stance mistakes made by shooters.

Windham Weaponry: Makers Of ARs & More

For Richard Dyke, previous owner of Bushmaster, his legacy has evolved under a new banner, Windham Weaponry, which continues to manufacture a number of AR-type rifles and pistols to this day.

Interests



Get the best of American Rifleman delivered to your inbox.