Glock 74058 G20 10-Round Magazine .45 ACP for Glock 20 Gen 5 - Black Polymer
- Capacity-Rounds:
- 10
- Type:
- Magazines
- Firearm Make Fit:
- Glock
- Caliber-Gauge:
- 45 ACP
- Model:
- G20
- Material:
- Polymer
The Glock 74058 G20 10-round magazine in .45 ACP is the factory standard for your Glock 20 Gen 5, engineered to deliver reliable feeding shot after shot. Whether you're running drills at the range, training for defensive carry, or out in the field, this magazine pairs Glock's proven design with durable polymer construction reinforced by a hardened steel insert—built to withstand hard use and the occasional drop without losing function or losing rounds.
Built for shooters who demand consistency, the G20 magazine features a metal spring and follower that cycle reliably from the moment you load it fully compressed through to the last round. The double-stack configuration maximizes capacity in a compact footprint, and the viewing windows let you confirm your round count at a glance without removing the magazine from your kit. The orange follower provides quick visual feedback on magazine status, and the enlarged front base plate grips naturally and strips cleanly from the well.
This is the duty-grade magazine that comes standard on Gen 5 G20s for good reason—it's simple, proven, and does exactly what it's supposed to do. If you shoot a G20, G40, or G29, you can press this magazine into service, though note it will protrude slightly from the G29's frame. It's also compatible with earlier Glock generations that chamber these calibers, making it a versatile addition to any serious shooter's magazine rotation.
Key Features
- Hardened steel insert encased in durable polymer for impact resistance and reliability
- Double-stack design maximizes capacity in a compact profile
- Metal magazine spring and follower for consistent, reliable feeding
- Viewing windows for easy visual round-count confirmation
- Orange follower for quick status indication
- Enlarged front base plate for positive grip and clean extraction
- Factory standard for Glock 20 Gen 5
Specifications
| Product Model | Glock 74058 |
| Caliber | .45 ACP |
| Capacity | 10 rounds |
| Compatible Firearms | Glock 20, Glock 40, Glock 29 (protrudes from G29 frame); compatible with earlier Glock generations |
| Primary Fit | Glock 20 Gen 5 |
| Construction | Hardened steel insert with high-tech polymer shell |
| Follower | Orange |
| Spring Type | Metal magazine spring |
| Color | Black |
Frequently Asked Questions
Will this Glock 20 magazine work in my G40 or G29?
Yes, this magazine is compatible with the Glock 20, 40, and 29. However, when used in a G29, the magazine will protrude from the frame due to the G29's shorter grip.
Can I use this magazine in older Glock generation handguns?
This magazine is compatible with previous Glock generation handguns that chamber .45 ACP, including earlier G20 models. Check your owner's manual if you have questions about your specific generation.
What's the polymer made of, and how durable is it?
The magazine uses high-tech polymer reinforced with a hardened steel insert to protect against deformation from drops and impacts. It's designed to withstand hard field use without compromising function.
How do the viewing windows work?
The viewing windows on the side of the magazine allow you to visually confirm your round count at a glance, so you always know how many rounds you have loaded without removing the magazine.