Glock 21 10-Round Magazine

Features

1. Genuine Glock Factory OEM — Manufactured by Glock to original specifications for guaranteed fit, function, and reliability in your pistol.
2. 10-Round .45 ACP Capacity — Holds 10 rounds of .45 ACP, keeping you compliant with capacity-restricted jurisdictions across all 50 states.
3. 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.
4. Steel-Insert Polymer Body — Hardened steel insert encased in high-impact polymer prevents deformation and resists cracking under hard use.
5. Numbered Witness Holes — Side witness holes let you verify remaining round count at a glance without disassembly.
6. Heavy-Duty Steel Spring — Tempered steel spring delivers consistent feeding pressure from the first round to the last.
7. Ambidextrous Mag Catch Cut — Double-cut magazine body works with both standard and reversed magazine releases on Gen 4 frames.
8. Black Polymer Finish — Matte black exterior matches factory Glock aesthetics and resists holster wear and weather exposure.
9. Made in Austria — Built in Glock's home factory to the same standards as the magazines shipped with new pistols.