PROMAG FOR GLOCK 21 MAGAZINE - 45 ACP - 10 ROUND CAPACITY - 40 ROUND BODY - POLYMER - BLACK
ProMag Industries
$107.69
(2 reviews)
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ProMag Industries
PROMAG FOR GLOCK 21 MAGAZINE - 45 ACP - 10 ROUND CAPACITY - 40 ROUND BODY - POLYMER - BLACK
The ProMag Glock 21 Magazine delivers reliable .45 ACP feeding in a California-compliant 10-round configuration, housed inside a full-size 40-round body for a comfortable, extended grip.
- California-compliant 10-round capacity in a 40-round polymer body
- Heat-treated chrome silicon wire spring for consistent feed reliability
- Durable polymer construction resists impact, corrosion, and wear
- Manufactured and assembled entirely in the USA
- Backed by a lifetime guarantee against manufacturer defects
- Easy-loading design reduces thumb fatigue during range sessions
Who This Is For
This magazine is ideal for California-based Glock 21 owners who want a full-size grip profile without exceeding the state's 10-round magazine capacity limit. Whether you're a competitive shooter, a home-defense enthusiast, or simply a range regular who values American-made quality and long-term reliability, this ProMag offers a dependable, compliant feeding solution for your .45 ACP pistol.
Specifications
| Brand | ProMag Industries |
|---|---|
| Compatible Firearm | Glock 21 |
| Caliber | .45 ACP |
| Capacity | 10 Rounds (California Compliant) |
| Body Size | 40-Round Body Profile |
| Material | Polymer |
| Color | Black |
| Spring Material | Heat-Treated Chrome Silicon Wire |
| Country of Origin | USA |
| Warranty | Lifetime Manufacturer Guarantee |
Frequently Asked Questions
Will this magazine work with all Glock 21 variants?
This ProMag is designed to be compatible with standard Glock 21 pistols chambered in .45 ACP. However, please note that this product is not manufactured, authorized, endorsed, or warranted by GLOCK, and GLOCK does not warrant or represent compatibility with their pistols. We recommend verifying fit with your specific firearm before use.
Why does a 10-round magazine have a 40-round body?
The 40-round body provides a longer grip surface for improved ergonomics and control, particularly beneficial for shooters with larger hands. The internal capacity is permanently blocked to 10 rounds to comply with California's magazine capacity restrictions, making it fully legal for use and purchase in the state.
Is this magazine legal to purchase in California?
Yes. This magazine is specifically configured as a California-compliant 10-round magazine, making it legal to purchase and use in California and other states with similar capacity restrictions. The 40-round body is permanently blocked at 10 rounds at the factory. Always verify your local and state regulations before purchasing any firearm accessory.
- Caliber:
- 45 ACP
- Capacity:
- 10/40 Round
- Color:
- Black
- Follower Color:
- Black
- Type:
- Pistol Magazine
- CA Compliant:
- Yes
- Platform:
- Glock 21
- Material:
- Polymer
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Reviews
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⭐️⭐️⭐️⭐️⭐️
My mag fell out my gun the first day at the range, I bought gorilla duct tape and it actually works ! One piece of tape gets the job done, I wrote a bad review but I take it back lol definitely 5 stars if you use a piece of tape !
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Terrible
Mag would not lock into place, easily falls out while shooting. I wouldn’t recommend ordering this at all.