# Glock G45 Gen5 MOS 9mm: Precision & Versatility with Optic Ready Slide

**Brand:** Glock
**Category:** Compact Handguns
**Caliber:** 9mm

## Specifications

- **Caliber:** 9mm
- **Barrel Length:** 4.02"
- **Capacity:** 17 rounds
- **Weight:** 30.34 oz
- **Overall Length:** 7.44"
- **UPC:** 810100237110
- **SKU:** UCEGGA2Kc

## Description

The Glock G45 Gen5 MOS is a semi-automatic handgun chambered in 9mm Luger, built around the Gen5 platform with an MOS (Modular Optic System) cut slide that lets you mount a red dot without additional machining. The 4.02-inch Glock Marksman Barrel uses polygonal rifling for tighter groups, and the ambidextrous controls work for both right- and left-handed shooters.

### Key Specifications
- **Brand:** Glock
- **Category:** Pistols
- **Series:** Gen5 MOS
- **Model:** G45
- **Caliber:** 9mm Luger
- **Barrel Length:** 4.02 inches
- **Grip Material:** Polymer
- **Action:** Double Action Only (DAO)
- **Overall Length:** 7.44 inches
- **Hand Orientation:** Ambidextrous
- **Sights Configuration:** Fixed 
- **Slide Finish Color:** Black 
- **Magazine Type:** Double Stack 
- **Frame Material:** Polymer 
- **Safety Features:**
  - Firing Pin / Trigger Block Safety  
  - Grip Finish: Black 
  - Weight: 30.34 oz 
  - Capacity: 17+1 rounds (includes three magazines)  
  - Height: 5.47 inches  
  - Width: 1.34 inches  

### Features

The MOS cut slide is the defining addition here. It accepts a range of red dot footprints, so you can dial in optic-assisted target acquisition without permanent mods. The Glock Marksman Barrel improves shot-to-shot consistency compared to earlier Gen barrels. At 17+1 capacity with three magazines included, the G45 covers both range sessions and carry duty without reloading mid-string. The polymer frame keeps weight at 30.34 oz loaded, and the ambidextrous slide stop means no fumbling for southpaws.

## What Reviewers Say

*Quoted verbatim from YouTube reviews. Each link opens the video at the moment quoted.*

> The finish is absolutely coming off. I don't know what it is about Glocks, but since the Gen 4s, they have not been able to make a finish that will last on their slide release and slide lock.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=36_UEVAthh8&t=267s)

> It changes the character of the way this is going to recoil and the way it shoots because you get the leverage that you get from the g17 grip without the mask that you get from a g17 slide.
>
> — [Colion Noir](https://www.youtube.com/watch?v=GMGH-JgXXlk&t=85s)

> The trigger itself is mushy as you would expect from a Glock.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=36_UEVAthh8&t=320s)

> What I always say about Glock triggers is if you can't shoot a Glock well because of the trigger, then you just can't shoot well.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=36_UEVAthh8&t=348s)

> If you're going to have an optics ready gun, you should have optics ready sights.
>
> — [Mrgunsngear Channel](https://www.youtube.com/watch?v=36_UEVAthh8&t=556s)

## What Customers Say

*AI-generated insights from customer reviews*

Owners of the Glock G45 Gen5 MOS tend to focus on two things: the MOS slide and the Marksman Barrel. The optics compatibility is the most-cited reason people choose the G45 over older Gen variants. Being able to run a red dot out of the box without gunsmith work matters to competitive shooters and those who carry daily. Accuracy feedback is consistently positive, with most users crediting the Marksman Barrel for tighter groups than they got from earlier Glock barrels.

Ergonomics draw mostly favorable comments. The grip fits a wide range of hand sizes, and the ambidextrous design works well for left-handed shooters who often feel afterthought-ed by other platforms. The 17-round capacity gets mentioned approvingly. It's a lot of capacity in a pistol that doesn't feel oversized.

Grip texture and trigger feel come up occasionally as personal-preference critiques. Some shooters want more aggressive texturing, others find the trigger reset unremarkable compared to aftermarket alternatives. Customization options are broad though, so most people just upgrade those parts rather than switching platforms.

## Pricing

**1 offers available**

| Vendor | Price |
|--------|-------|
| Guns Com | $789.99 |

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*Data from [GunsNation](https://gunsnation.com)*