PROMAG FOR GLOCK 21 MAGAZINE - 45 ACP - 10 ROUND CAPACITY - 13 ROUND BODY - POLYMER - BLACK
ProMag Industries
$24.69
(1 review)
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ProMag Industries
PROMAG FOR GLOCK 21 MAGAZINE - 45 ACP - 10 ROUND CAPACITY - 13 ROUND BODY - POLYMER - BLACK
The ProMag Glock 21 Magazine delivers reliable, American-made performance in a California-compliant 10-round configuration — purpose-built for shooters who demand consistency without compromising on quality.
- California-compliant 10-round capacity in a full-size 13-round body
- Precision-wound magazine springs use heat-treated chrome silicon wire
- Durable polymer construction resists impact, corrosion, and daily wear
- Manufactured in the USA with multi-stage quality inspection at every step
- Backed by a ProMag lifetime guarantee against manufacturer defects
- Drop-free design engineered for smooth, consistent feeding in .45 ACP
Who This Is For
This magazine is ideal for Glock 21 owners in California and other restricted states who need a dependable, full-size replacement or backup magazine. Whether you're a range shooter looking for a reliable spare, a new Glock 21 owner stocking up on essentials, or a concealed carry holder seeking a legally compliant option, this ProMag offers the performance and peace of mind you need without sacrificing the ergonomics of the standard 13-round frame profile.
Specifications
| Brand | ProMag Industries |
|---|---|
| Compatible Firearm | Glock 21 |
| Caliber | .45 ACP |
| Capacity (Blocked) | 10 Rounds |
| Body Capacity | 13 Rounds |
| Material | Polymer |
| Color | Black |
| Country of Manufacture | USA |
| Warranty | Lifetime Guarantee |
| Category | CA Blocked Pistol Magazine |
Frequently Asked Questions
Is this magazine blocked to 10 rounds, and can it be unblocked?
Yes, this magazine ships with a permanent block limiting it to 10 rounds to comply with California law and similar state restrictions. It is housed in a standard 13-round body. Removing or altering the block to exceed the legal capacity limit in your jurisdiction may be a criminal offense. Always verify your local laws before modifying any magazine.
Will this ProMag magazine fit and feed reliably in my Glock 21?
This magazine is specifically designed to fit the Glock 21 chambered in .45 ACP. ProMag uses precision manufacturing and heat-treated chrome silicon springs to ensure consistent feeding and reliable performance. Please note that ProMag is an aftermarket manufacturer — Glock does not endorse, authorize, or warranty the compatibility of this product with Glock pistols. Most users report reliable feeding, but fit and function can vary slightly between individual firearms.
How should I store and maintain this magazine to extend its lifespan?
Store the magazine unloaded in a cool, dry environment away from direct sunlight and moisture to prevent spring fatigue and polymer degradation. Periodically disassemble the magazine to clean debris from the interior, and lightly lubricate the spring if needed. Avoid storing it fully loaded for extended periods to maintain spring tension over time. If you experience any defect in materials or workmanship, ProMag's lifetime guarantee covers manufacturer defects.
- Caliber:
- 45 ACP
- Capacity:
- 10/13 Round
- Color:
- Black
- Follower Color:
- Black
- Type:
- Pistol Magazine
- CA Compliant:
- Yes
- Platform:
- Glock 21
- Material:
- Steel
Reviews
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Buyer
Product delivered just as described. Quick to respond to questions.