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Glock 21 V MOS .45 ACP 4.61" Barrel Optic Ready Front Serrations 13+1 Rounds
Our editorial team reviews specifications, product data, and field-use information to keep pages accurate.
$620.00
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SKU: WX2*0749368
Overview
Built for shooters who want a full-size .45 ACP pistol with modern optic-ready flexibility, this model pairs a factory MOS slide with a 4.61" Glock Marksman Barrel and a 13+1 capacity. It is suited to duty use, home defense, and tactical roles, with features such as front serrations, ambidextrous slide stop levers, a flared magwell, and no finger grooves for a more universal fit. The included adapter plate makes it easy to start mounting a miniature red dot sight, while additional plates can be added separately to match your preferred optic. Glock’s SAFE ACTION System and full-size frame round out a practical platform for shooters who value straightforward operation and control.
Why Hunters Choose the Glock
Factory Mos
Slide is optic-ready for popular
Includes One
Adapter plate to start mounting
4.61-inch Glock
Marksman Barrel features enhanced rifling
Full-size Frame
Longer barrel support better recoil
13+1 Capacity
Three included 13-round magazines
Key Features
- Full-size Glock 21 V MOS chambered in .45 ACP with 13+1 capacity
- Factory MOS slide is optic-ready for popular miniature red dot sights
- Includes one adapter plate; additional plates sold separately
- 4.61-inch Glock Marksman Barrel with enhanced rifling
- Front serrations support press checks
- Ambidextrous slide stop levers and reversible magazine catch
- Flared magwell and no finger grooves for a more universal fit
Best Used For
- Home defense users wanting a full-size .45 ACP pistol with optic-ready capability.
- Duty or tactical shooters who prefer red dot mounting without custom slide milling.
- Hunters needing a controllable sidearm with a full-size frame and 13+1 capacity.
- Shooters who value ambidextrous controls and a universal-fit grip profile.
- Users seeking a factory-configured pistol for faster target acquisition and reloads.
Specifications
| Ambidextrous Slide Stop Levers | Yes |
|---|---|
| Barrel Length | 4.61 inches |
| Barrel Type | Glock Marksman Barrel |
| Blade Finish | Matte black |
| Caliber | .45 ACP |
| Capacity | 13+1 rounds |
| Ergonomics | Refined ergonomics |
| Flared Magwell | Yes |
| Frame Size | Full-size |
| Front Serrations | Yes |
| Included Adapter Plates | 1 |
| Included Magazines | 3 x 13-round magazines |
| Mos System | Yes |
| No Finger Grooves | Yes |
| Optic Ready | Yes |
| Reversible Magazine Catch | Yes |
| Rifling | Enhanced rifling |
| Safety System | SAFE ACTION System |
Pros
- Factory MOS slide is optic-ready for popular miniature red dot sights.
- Includes one adapter plate to start mounting compatible optics.
- 4.61-inch Glock Marksman Barrel features enhanced rifling for improved accuracy.
- Full-size frame and longer barrel support better recoil control.
- 13+1 capacity with three included 13-round magazines.
- Front serrations, flared magwell, and ambidextrous slide stop levers add practical handling features.
Considerations & Trade-offs
- Full-size frame and 13+1 capacity make it less compact for concealed carry or minimalist setups.
- Optic-ready use is limited to compatible miniature red dot sights and the included adapter plate; additional plates are sold separately.
- The .45 ACP chambering offers substantial power, but it also means higher recoil and typically larger ammunition than smaller-caliber alternatives.
- The pistol includes three 13-round magazines, so users wanting a different carry or range setup may need to source additional magazines separately.
Suggested Comparisons
- Full-size .45 ACP pistol
- Optic-ready handgun
- Home defense pistol
- Duty/tactical pistol
Suggested Accessories
- Optic mount adapter plate
- Miniature red dot sight
- Pistol cleaning kit
- Magazine pouch
Frequently Asked Questions
Is the Glock 21 V MOS optic ready from the factory?
Yes. The MOS (Modular Optic System) slide is precision-machined for red dot mounting, and the pistol includes one adapter plate to get started. Additional adapter plates are sold separately.
What caliber and capacity does this model use?
It is chambered in .45 ACP and listed with 13+1 capacity. The product also includes three 13-round magazines.
What barrel length is listed for the Glock 21 V MOS?
The listed barrel length is 4.61 inches. The description identifies it as a Glock Marksman Barrel with enhanced rifling.
Does the slide have features that help with handling and checks?
Yes. The product lists front serrations for press checks, along with ambidextrous slide stop levers.
What comes in the box?
The listing states that the pistol includes one adapter plate and three 13-round magazines. It also notes that additional adapter plates are sold separately.