Glock 40 Gen4 10mm: A Comprehensive Guide to the Ultimate Handgun for Accuracy and Power
The Glock 40 Gen4 in 10mm Auto is a powerful pistol made for people who value accuracy, toughness, and adaptability. The Glock 40 delivers a remarkable blend of features and functionality, making it an excellent choice for anyone looking for a dependable personal defense weapon, hunter, or tactical shooter. This Glock 40 Gen4 10mm review provides a detailed exploration of the Glock 40 models, including comparisons and practical insights to help you choose the perfect option.
How the Glock 40 Gen4 Stands Out
When choosing a handgun, you need a model that offers both reliability and the ability to perform in a variety of conditions. The Glock 40 Gen4 is designed to excel in:
- Hunting: The powerful 10mm Auto caliber and long barrel provide the stopping power and accuracy needed to take down the game at medium to long ranges.
- Competitive Shooting: The Modular Optic System (MOS) and adjustable sights make this gun a precision instrument for competitive environments.
- Personal Defense: Its advanced safety features and durable construction ensure it’s ready when you need it most.
Models Overview



The Glock 40 Gen4 is available in several models, each offering a unique set of features. Let’s break down the three most popular versions:
| Attribute | GLOCK 40 M.O.S. | GLOCK 40 Gen4 10MM 6.02 ADJ MOS | GLOCK 40 Gen4 10MM 6.02 ADJ MOS |
| Item | B2_GLOCK_G40415MOSAUT | B2_GLOCK_UG4030101MOS | B2_GLOCK_UG4030103MOS |
| SKU | G40415MOSAUT | UG4030101MOS | UG4030103MOS |
| Model | 40 M.O.S. | G40 | G40 |
| UPC | 764503048005 | 764503051708 | 764503051722 |
| Price | $777.33 | $821.33 | $821.33 |
| Manufacturer | Glock | Glock | Glock |
| Width | 9.5 inches | 9.5 inches | 9.5 inches |
| Length | 10.5 inches | 10.5 inches | 10.5 inches |
| Height | 2.5 inches | 2.5 inches | 2.5 inches |
| Weight | 4.63 lbs | 4.6 lbs | 6 lbs |
| Accessories | 3 Mags, Mag Loader, Cleaning Kit, Pistol Case, Backstrap Set, Gun Lock | 3 Mags, Mag Loader, Cleaning Kit, Pistol Case, Backstrap Set, Gun Lock | Mag Loader, 3 Mags, Cleaning Kit, Pistol Case, Backstrap Set, Cable Lock |
| Action | DAO (Double Action Only) | DAO (Double Action Only) | DAO (Double Action Only) |
| Barrel Description | Hammer Forged | Steel | Hammer Forged |
| Barrel Length | 6.02 inches | 6.02 inches | 6.02 inches |
| Caliber/Gauge | 10mm Auto | 10mm Auto | 10mm Auto |
| Capacity | 15 rounds | 10 rounds | 15+1 rounds |
| Finish | Gas Nitride | Gas Nitride | Gas Nitride |
| Frame Color | Black | Black | Black |
| Frame Description | Polymer Frame w/Picatinny Rail | Polymer Frame w/Picatinny Rail | Polymer Frame w/Picatinny Rail/Serrated Trigger Guard |
| Grip Material | Polymer | Polymer | Polymer |
| Grip Type | Interchangeable | Interchangeable | Black Textured Finger Grooved w/Interchangeable Backstrap |
| Grips | Black Textured Finger Grooved w/Interchangeable Backstrap | Black Interchangeable Backstrap | Black Textured Finger Grooved w/Interchangeable Backstrap |
| Hand | Right | Right | Right |
| Magazine | 3 10-rounds | 3 10-rounds | 3 15-rounds |
| Sight Configuration | Adjustable | Adjustable | Adjustable |
| Sight Style | Adjustable Glock Sights | Adjustable Glock Sights | Adjustable Glock Sights |
| Slide Description | Serrated/Long w/MOS Cuts | MOS Cut/Serrated | Serrated/Long w/MOS Cuts |
| Slide Finish | Matte Black | Matte Black | Matte Black |
| Slide Material | Steel | Steel | Steel |
| Safety Features | Trigger/Firing Pin/Drop | Firing Pin/Trigger Block | Trigger/Firing Pin/Drop |
| Weight Range | 32 oz to 47.99 oz | 32 oz to 47.99 oz | 32 oz to 47.99 oz |
| Overall Length (OAL) | 9.49 inches | 9.49 inches | 9.49 inches |

Deep Dive into Glock 40 Gen4 Features
No matter which model you choose, the Glock 40 Gen4 shares several core features that define its performance and versatility.
- Caliber & Power: The Glock 40 utilizes 10mm Auto ammunition, a powerful round for self-defense, hunting, and target shooting. Essentially, the 10mm is very fast and loaded with more energy than the standard 9mm, making it an excellent choice for someone looking for more stopping power in a handgun.
- Barrel Length & Accuracy: The 6.02-inch barrel of the Glock 40 differentiates it from other handguns. The long barrel helps in increasing the overall accuracy, particularly at long range. This makes the Glock 40 an excellent choice for tactical scenarios as well as for greater game hunting.
- Customization with MOS System: The Modular Optic System (MOS) is the primary component of the Glock 40 variants. It enables users to mount a wide range of optics without requiring any extra tools or modifications. Whether you prefer a red dot or a reflex sight, the MOS system significantly improves aiming accuracy.
- Enhanced Grips and Ergonomics: The replaceable backstrap system enhances the overall grip and ergonomics which enables shooters to adjust the grip according to their hand size. This ensures you get the most comfort and control possible, whether you’re shooting for extended durations or need to react quickly in defensive scenarios.
- Durability and Construction: The Glock 40, similar to other Glock guns, comes with a polymer frame that is corrosion-resistant, lightweight, and strong. Its sturdy design and high resistance to wear and tear are enhanced by its matte black finish. This handgun is built to survive, whether you’re conducting tactical operations or hiking through the woods.
Comparison of Glock 40 Gen4 Models
Each Glock 40 model provides distinct advantages depending on your needs. Here’s a breakdown of the key differences between the models:
- Glock 40 M.O.S. (G40415MOSAUT): This model comes with a 15-round capacity that is ideal for those who need a higher ammunition capacity for extended shooting sessions. It also features adjustable Glock sights and a trigger/firing pin/drop safety for peace of mind.
- Glock 40 Gen4 10MM 6.02 ADJ MOS (UG4030101MOS): Glock 40 Gen4 10MM 6.02 comes with a 10-round capacity but provides the same precision and optics compatibility. For enhanced safety, it has firing pin/trigger block safety which makes it ideal for the shooters.
- Glock 40 Gen4 10MM 6.02 ADJ MOS (UG4030103MOS): This model comes with a 15+1 round capacity and strikes a balance between the two. Additionally, it has a serrated trigger guard for improved control in rapid-fire scenarios and changeable backstraps for more comfort.
Why Choose Glock 40 Gen4?
- Hunting Applications: The Glock 40’s power and precision make it an excellent firearm for hunting. The 10mm caliber provides the energy required to humanely take down medium-to-large game, while its lightweight frame ensures it’s easy to carry in the field.
- Competitive Shooting: MOS (Modular Optic System) technology with adjustable sights provides competitive shooters with a significant lead in accuracy. This feature also enables easy attachment of red dot sights, improving target acquisition and precision. The Glock 40, known for its robust design, excels in performance, delivering consistent results even if the shooter fires at a high velocity or fires at long-range targets.
- Home and Personal Defense: The Glock 40 is widely regarded for its outstanding stopping power, making it a reliable option for home defense. This firearm is built to be strong and durable. It can handle tough use, so it will perform well when you need it the most. Additionally, the Glock 40 comes with a range of advanced safety features that improve safety and reduce the risk of accidental discharges.

Final Thoughts
The Glock 40 Gen4 10mm is an excellent option if you’re looking for a handgun that excels in power, accuracy, and versatility. You will be receiving a pistol that is exceptional in terms of dependability, performance, and safety features whether you choose the Glock 40 M.O.S., the Glock 40 Gen4 10MM 6.02 ADJ MOS (UG4030101MOS), or the Glock 40 Gen4 10MM 6.02 ADJ MOS (UG4030103MOS).
The Glock 40 Gen4 series offers a range of configurations to suit every shooter’s preferences, so you can rest assured that there’s a model for you.
With an outstanding reputation for quality and performance, the Glock 40 Gen4 10mm is ready for anything – from personal defense to precision shooting and hunting. Choose your model today and experience the power of the Glock 40 firsthand.
Please Note: Product pricing and availability may vary. Please verify current pricing and stock information from our website at https://www.bigstonesarmory.com.

