Description
This ProMag magazine gives you a solid spare or replacement option for your Glock 21 or Glock 30 in .45 ACP. It holds 13 rounds and is constructed with a durable black polymer body featuring a full-length steel internal insert that adds reinforcement where it matters.
What You Get with This ProMag Magazine
The polymer body is made from DuPont Zytel, a high-performance material that stands up to daily use at the range or for duty backup. You get an injection-molded follower that keeps rounds feeding smoothly, paired with a heat-treated chrome-silicon wire spring designed to maintain reliable performance even after extended storage. Numbered witness holes let you quickly count your rounds without unloading.
Built for Glock 21 and 30 Compatibility
This magazine works with both the full-size Glock 21 and the compact Glock 30, making it versatile if you run both guns. All Glock generations from Gen 1 through Gen 4 will take this magazine without issue. The fit is snug with no wobble thanks to precise tolerances matched to factory specs.
Why This Matters for Your Shooting
When it comes to spare magazines, you want something that feeds reliably every time without breaking the bank. This ProMag delivers on that front, giving you extra capacity at the range or a dependable backup if you need it. Made in the USA and backed by ProMag’s lifetime warranty against manufacturer defects, it’s built to last.
Key Specifications
- Capacity: 13 rounds
- Caliber: .45 ACP
- Fits Models: Glock 21 and Glock 30
- Compatibility: Gen 1-4 compatible
- Body Material: DuPont Zytel polymer
- Internal Insert: Full-length steel
- Follower: Injection-molded polymer
- Spring: Heat-treated chrome-silicon wire
- Finish: Black
- Magazine Length: 9.15 inches
- Manufacturer: ProMag Industries
- Manufacturer Part Number: GLK-A14
- UPC: 708279014369
- Country of Origin: Made in USA
- Warranty: Lifetime against manufacturer defects
What’s Included
- ProMag 13-round .45 ACP magazine
Frequently Asked Questions
Will this ProMag magazine work with my Glock 21?
Yes, this magazine is designed for Glock 21 and also works with the compact Glock 30. It’s compatible with Gen 1 through Gen 4 Glock 21 models. The tight tolerances ensure a snug fit with no rattle in the magazine well.
How many rounds does this magazine hold?
This ProMag magazine holds 13 rounds of .45 ACP ammunition. The magazine features numbered witness holes on the side so you can quickly see how many rounds you have loaded without dumping them out.
What makes the DuPont Zytel polymer construction better than alternatives?
DuPont Zytel is a high-performance polymer that resists impact, abrasion, and temperature swings without cracking or warping. Combined with the full-length steel insert, this magazine can handle drops and rough treatment while maintaining reliable feeding. It’s also lighter than all-steel mags and won’t rust.
Is this magazine covered by any warranty?
Yes, ProMag backs every magazine with a lifetime warranty against manufacturer defects. If you ever have an issue with this magazine, you can contact ProMag and they’ll send you a replacement.






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