Glock G21 G5 MOS Features
The Glock G21 G5 MOS is engineered with a durable polymer frame and a gas nitride finish, ensuring both rugged durability and a sleek appearance. The gray frame adds a distinctive look to the pistol. The Modular Optics System (MOS) configuration allows for the easy attachment of various optics, enhancing the pistol’s versatility and precision.
The pistol features fixed Glock sights, providing consistent and reliable aiming. The front slide serrations improve grip for easier manipulation of the slide. The flared mag-well aids in quick and smooth magazine changes, enhancing the pistol’s performance in tactical situations.
This model includes three 13-round magazines, providing ample capacity for extended shooting sessions. The absence of a manual safety ensures a straightforward and user-friendly operation, relying on Glock’s Safe Action system for safety. The pistol comes in a durable plastic case for secure storage and transport.
Glock G21 G5 MOS Specifications
- Manufacturer: Glock
- Family: G21 Series
- Model: G21 G5 MOS
- Type: Semi-Auto Pistol
- Action: Safe Action
- Caliber/Gauge: .45 ACP
- Finish: Gas Nitride
- Finish Type: Black
- Frame: Polymer Frame
- Stock/Grips: Grey Frame
- Barrel Length: 4.61″
- Overall Length: 8.03″
- Capacity: 13+1
- # of Magazines: 3
- Magazine Description: 13 rd.
- Sights: Fixed Glock Sights
- Sight Type: Fixed Sights
- Optics Ready Cut: Yes
- Weight: 29.81 oz.
- Shipping Weight: 3.3 lbs.
- Safety Features: No Manual Safety
- Case: Plastic
- Additional Info 1: Front Slide Serrations
- Additional Info 2: Flared Mag-Well
- Additional Info 3: Modular Optics System
| Barrel Length | 4.6 |
|---|---|
| Caliber | .45 ACP |
| Capacity | 13 |
| Condition | New in Box |
| Finish Per Color | Grey |
| Manufacturer | Glock |
| Manufacturer Part Number | UA215S203MOSGF |
| Model | G21 G5 MOS |
| Type | Semi Auto Handguns |
| UPC | 764503061547 |
Frequently Asked Questions About This Product
Why buy Glock G21 G5 MOS Grey .45 ACP 4.6" Barrel 13-Rounds from Miami Shooters Supply?
We’re a trusted firearms dealer offering fast shipping, competitive pricing, and 100% compliance with U.S. federal firearm laws. All orders ship from our licensed facility with full tracking and expert customer service.
Where can I buy Glock G21 G5 MOS Grey .45 ACP 4.6" Barrel 13-Rounds?
You can purchase this item directly on our website and have it shipped to your local FFL dealer. You can also visit us in-store in Miami, Florida.
Is Glock G21 G5 MOS Grey .45 ACP 4.6" Barrel 13-Rounds available now?
Availability is shown live on this page. If the “Add to Cart” button is visible, this item is currently in stock and ready to ship.
What category does this product belong to?
This product is listed under: HANDGUNS, Semi Auto Handguns.
What tags or features does this product have?
Key features and tags for this product include: HANDGUNS, Semi Auto Handguns.
Is this product legal in my state?
It is your responsibility to ensure this item is legal in your state or locality. We ship only to valid FFL dealers in compliance with U.S. laws. Always check your local regulations.
FFL Transfer & Firearms Laws for Glock G21 G5 MOS Grey .45 ACP 4.6" Barrel 13-Rounds
All firearms, including the Glock G21 G5 MOS Grey .45 ACP 4.6" Barrel 13-Rounds, must be shipped to a licensed Federal Firearms License (FFL) dealer. You will be required to complete a background check and any necessary paperwork before taking possession.
How It Works
- Place your order online.
- Provide your preferred FFL dealer information.
- We ship the firearm directly to your FFL.
- You complete the background check and pickup at the FFL.
Legal Compliance
We comply with all federal and state firearm laws. It is your responsibility to ensure the Glock G21 G5 MOS Grey .45 ACP 4.6" Barrel 13-Rounds is legal in your state. Some states may have restrictions on certain firearm models or features.
Helpful Resources
Need assistance? Contact our Miami store for help with FFL transfers and firearm compliance.

