Review GLOCK 40

Glock has now unveiled the long-slide Gen4 G40 chambered in 10 mm, which some enthusiasts have dubbed Glockzilla, as a way to satisfy its handgun hunting supporters. This model debuted the same year that Glock introduced the factory installed MOS (Modular Optics System) for reflex and red dot sights. Read the Glock 40 10mm Review to learn more.

Glock 40

Specifications Glock 40


  • Caliber: 10mm
  • Auto Weight (without magazine): 915 g | 32.28 oz
  • Weight (with loaded magazine):1265 g | 44.62 oz
  • Magazine Capacity: Standard 15 + 1
  • Barrel Length: 153 mm | 6.02 inch
  • Length (Overall): 241 mm | 9.49 inch
  • Trigger Pull: 24 N
  • Grips: Rough Texture, Multiple Back Strap System
  • Sights: White Dot Front, Adjustable Outline Rear
  • Accessory Rail: 2″
  • Twist: 1:9.84” RH
  • Rifle Grooves: Hexagonal
  • Accessories: Hard Case, 3 Magazines, Magazine Loader, MOS Adapter Set 02, 4 Removable Back Straps, Back Strap Tool, Rear Sight Adjustment Tool, Cleaning Brush, Lock, Owner’s


  • You can look further with a longer sight radius
  • The MOS system is outstanding. It works as expected, and it is nearly future-proof since only new plates are required
  • The capacity of this magazine is 15+1 rounds of a large-bore handgun cartridge
  • For the caliber, this is true. 10mm 1911 guns are significantly hefty


  • Concealment – This firearm is difficult to conceal when carrying
  • The Glock 40 is a big gun, so you’ll need some practice drawing it. This could still be a duty weapon for those used to drawing shorter-barrelled pistols.
  • The ignition is a bit rough-faced, except for the passive-safety, which makes it unpleasant to fire for long amounts of time.
  • The rear sight overhang, as well as the lack of an extended slide stop, are a few drawbacks.

Intro to the Glock 40

The 10mm handgun cartridge’s story is well-known. The 10mm cartridge has been neglected in popularity for some time, appearing to be relegated to a niche market of competitive shooters and fans. However, the 10mm has been making a comeback.

For some users, the 10-millimeter came through the Colt Delta Elite. It fires several thousand rounds at the local range with consistent reliability. The Delta Elite’s heft helps to absorb the recoil, according to most users. The 10mm is regarded as a jumpy round, and the Delta Elite’s weight helps to dampen the effect.

The Largest and Most Powerful Glock

As the review of Glock 40 showed, it is a unique gun in the shooting industry, and it’s one that many lovers of Glock haven’t come across before. Every other Glock, like every other polymer-frame handgun from the firm, is based on a blocky slide and a boxy frame. Here are a few reasons why you should choose it:

  1. The Glock 40 is a 10mm handgun that resembles the legendary Glock 17L in terms of length and slide size.
  2. Its 6”, long barrel and lengthy slide appeal to competitive shooters.
  3. It’s about 32 ounces lighter than the Delta Elite.
  4. The Glock 40’s popularity as a competitive shooting firearm is without dispute, thanks to its long sight radius (8.3 inches) and full-size handle.

The Glock 40, on the other hand, should still have enough weight to make the powerful 10mm round manageable. But it is the best gun for other people who want something more recreational, or for personal protection.

How Glock 40 looks

Glock 40 gen 4 mos 10mm pistol is truly enormous, comparable to the legendary Glock 17L. In reality, it’s almost the same size as the mythical Glock 17L, making it a strong candidate for “largest Glock.” The Glock 40 is shorter than the 17L, by roughly 0.1 inches (3 millimeters). However, owing to its greater width and weight, it can endure higher ballistic pressures from the 10mm cartridge with additional beef. In the field of “law of gross tonnage,” the Glock 17 is largely unmatched.

Every aspect of the Glock 40’s operation is identical to that of other Glock handguns, from the deliberate and focused feel to the lack of superfluous features. “We included this function to make the gun appear more appealing,” said one Glock engineer “but the Glock 40 still appears to be a teutonic athlete”.

What about the capacity?

The Glock 40 gun has a 15-round magazine capacity identical to the Glock 20. For buyers in states with magazine capacity restrictions, 10-round factory magazines are also available.

The Glock’s factory sights are a point of contention, with people on all sides making compelling arguments regarding their benefits and limitations.

Here are some capacity facts:

  • The Glock 40 of this overview had the standard white outline post-and-notch sights that are available on many Glocks. They functioned adequately
  • The Glock 40 is a popular concealed carry pistol, thanks to its compactness and accuracy
  • The MOS version of the Glock 40 accommodates a reflex sight, which will be appreciated by many users

Not a recommended!
Glock users have been advised not to shoot lead projectiles in plain English printed in black and white within their Glock owner’s handbook, which reads: “DO NOT SHOOT LEAD PROJECTILES.” To explain it another way, because the polygonal rifling cuts deeply into the lead, severe buildup and eventually structural failure of the barrel can occur. This is especially true if you’re using swaged lead bullets.

Two best hunting bullets options:

  • Heavy 10mm 180 Jacketed Hollow Point at 1360 FPS
  • Heavy 10mm Outdoorsman 220 Hard Cast Lead Flat Nose at 1200 FPS


There is no doubting the Glock 40 for anything else after it has fired and watched 10mm Auto cartridge fly through the air. The 10mm cartridge generates a lot of noise and smoke. The bullet’s substantial energy will wreak havoc on any berm that has to absorb it.

The Sellier & Bellot 180 grain FMJ rounds launched at an incredible velocity of 1328 feet per second through the 6′ barrel.


What it doesn’t feel like is a seismic recoil, which is more important. The Glock 40 was surprisingly and delightfully manageable due to the firearm’s weight and the polymer frame’s recoil dampening.

The grip of a Gen 4 Glock is smooth and easy to grasp, with a tactile texture that comfortable to hold. The finger grooves fit big mitts well. The slight expansion at the bottom of the grip makes reloads easier.

Who would need Glock 40?

This weapon is ideal for long-range shooting because of the Glock 40’s carbine-length sight radius and the 10mm round’s minimal bullet drop. At 50 yards, the flinching in advance of the recoil was preventing from punching a hole through the 10 ring.

After 50 rounds it was still anticipated that the gun would have a stronger kick than before. The Glock 40’s lengthy barrel, on the other hand, delivered the goods where it should be, thanks to some continuous breathing and concentration on the front sight. At 25 yards, a string of three bullseyes convinced that the Glock 40 is a great gun for training to control the pre-emptive flinching with more powerful ammo.


Glock handguns are some of the most popular guns on earth, but they also have their own unique problems. The Glock 40’s longer slide and different chambering mean that it can be difficult to find parts for this model when compared with other Glocks in .45 caliber or even 9mm kits available from aftermarket companies such as KKM who make excellent competition-grade barrels at very affordable prices!

Modular Optic System 
The MOS (Modular Optic System) is the most recent in the Glock line, and it’s a welcome addition. It’s a factory cut for optics mounting from the G40 and 9mm/.40 smaller siblings, which is essentially what it does. This isn’t anything new; aftermarket vendors have been offering this service for years.

It was unfortunate that the optic sent separately from Pride Fowler did not work with the MOS system. The optic was unable to fit properly into the slide when set up for one of the patterns because it was positioned too far forward. I was able to get my hands on a Trijicon mini-dot to evaluate the MOS system.

Those looking for the feature had to either buy an aftermarket slide, have it milled, or use an adapter plate that raises the sight higher. The advantages of lab-loading have at least a few. It’s simple and inexpensive to add the cuts, the cut-out region might be covered instead of being left bare, and tolerances are more consistent than separate machine loadings.

The adjustable rear sight sits just in front of the MOS mounting area. It comes standard with a flush and profiled slide plate that matches the gun. The blending is perfect, and only someone with good eyesight or who is standing quite close to the weapon would notice that it could be equipped with an optic. To install an optic, simply unscrew the plate and remove it. It’s held in place with two torx head screws, which makes it easy to remove.

The sights on the Glock are way too low for co-witnessing. Even though it’s an oversight from them, at least someone has come up with aftermarket systems which can help keep your weapon trained correctly.


There is nothing particularly outstanding about Glock’s performance if one has previously shot 10mm. The cartridge is similar to the.40 S&W cartridge. The recoil is not as snappy as it could be, which the dual spring and heavier slide help soak-up, but it’s not so tame that I can go on. With a Glock, my accuracy has been consistent.

The Glock is a popular choice for those who want to keep their weapon and ammunition simple. With the removal of serrations, this particular model became less appealing because it was not as easy on my finger while shooting in tight quarters like an apartment or car trunk during concealment situations where accuracy matters most – especially with three magazines worth.

The modular weapons system (MOS) is truly amazing on the Glock 40. Whether you use optics or not, this firearm has been made for those who want to hunt at longer ranges with accuracy and precision–perfect if your eyesight isn’t what it used be! The red dot sight also shines bright when tracking moving targets while providing instant feedback about exposed aiming points thanks either great trigger control or that improved Bang-Switch; no matter which one of these features gets installed first will make sure any user can achieve excellent results in hunting activities without worry ever again because their gun really does have everything covered under “Glock trademarked technologies.”


  • The G40 Gen 4 is a Glock at its core, except it’s considerably bigger. It’s an excellent weapon for people needing 10mm. The sacrifices to get there with the larger grip and enormous dimensions in my opinion aren’t worth it.
  • When it comes to focusing, the MOS system for optics mounting is a wonderful advance.
  • Customers searching for a strong 10mm Auto should choose the Glock40.

Summing up Glock 40 gen 4 review we want to add: if you’re in the market for a quality hunting handgun and don’t want to break the bank, the GLOCK 40 is an excellent option. With its polymer frame and 10mm rounds, it’s capable of taking down any medium-sized game animal out to 50 yards. So if you’re looking for an affordable hunting pistol that won’t let you down, be sure to check out the G40.

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