Glock 21 10-Round Magazine
The Glock 21 10-Round Magazine (MF10021) is a genuine factory OEM magazine chambered in .45 ACP for the G21, G21SF, G30, and G41 pistols. Built with a hardened steel insert wrapped in high-impact polymer, it delivers the feeding reliability Glock owners expect, while the 10-round capacity keeps you compliant with restricted-capacity jurisdictions. Numbered witness holes let you check your round count at a glance, and the double-cut body works with both standard and reversed mag releases on Gen 4 frames. A solid choice for range work, home defense, or stocking up on spares for your large-frame Glock.
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- SKU
- MF10021
$31.95
- Buy 2 for $30.35 each and save 5%
- Buy 3 for $28.76 each and save 10%
Description
Features
- Genuine Glock Factory OEM — Manufactured by Glock to original specifications for guaranteed fit, function, and reliability in your pistol.
- 10-Round .45 ACP Capacity — Holds 10 rounds of .45 ACP, keeping you compliant with capacity-restricted jurisdictions across all 50 states.
- Fits Glock 21, 21SF, 30, and 41 — Cross-compatible with the full lineup of large-frame .45 ACP Glocks, including Gen 3, Gen 4, and the G41 long slide.
- Steel-Insert Polymer Body — Hardened steel insert encased in high-impact polymer prevents deformation and resists cracking under hard use.
- Numbered Witness Holes — Side witness holes let you verify remaining round count at a glance without disassembly.
- Heavy-Duty Steel Spring — Tempered steel spring delivers consistent feeding pressure from the first round to the last.
- Ambidextrous Mag Catch Cut — Double-cut magazine body works with both standard and reversed magazine releases on Gen 4 frames.
- Black Polymer Finish — Matte black exterior matches factory Glock aesthetics and resists holster wear and weather exposure.
- Made in Austria — Built in Glock's home factory to the same standards as the magazines shipped with new pistols.
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Customer Reviews
4.9
100% of customers recommend this product
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Top customer reviews
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Worth the extra moneyA bit pricey. But after a cheap mag broke on me in the backcountry, this Glock mag feeds every round (and the witness holes are a nice touch).
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Works fineMagazine works perfectly fine in my Glock 21 and feeds without any issues.
Genuine factory part
Floor plate is a bit stiff to remove
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Perfect for restricted capacity needsbought 6 of these from Keep Shooting for my G21 SF and they all lock in solid with zero wobble.
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