Mag Adv Conv Kit 20-21 22lr

The Advantage Arms Magazine Conversion Kit for Glock 20-21 in .22 Long Rifle is a dedicated 10-round magazine engineered to pair with Advantage Arms' rimfire conversion systems for G20 and G21 platforms. This polymer-constructed magazine enables shooters to train economically with their primary duty or carry pistols by converting them to shoot cost-effective .22 LR ammunition without sacrificing ergonomics or controls.

The 10-round capacity strikes a practical balance for training sessions, allowing extended practice strings while maintaining feed reliability through a proven polymer design. The magazine includes last-round hold-open functionality, which locks the bolt to the rear after the final round cycles, providing visual and tactile feedback that the magazine is empty. This feature mirrors the manual-of-arms on full-power platforms, preserving muscle memory and training fidelity. Weighing just 0.25 lbs, the magazine adds minimal carry weight during conversion-kit use, and its compact profile (2 × 1.3 × 8 inches) ensures it doesn't complicate storage or transportation alongside standard duty magazines.

This magazine is purpose-built for law enforcement personnel, armed citizens, and competitive shooters who train with Glock 20 or Glock 21 platforms but need an economical way to log repetitions at the range. .22 LR ammunition costs a fraction of 10mm or .45 ACP, making high-volume practice sustainable. Officers and instructors use conversion kits with matching magazines to conduct low-recoil, low-cost qualification and proficiency drills while maintaining their primary firearm's manual of arms and sight picture. The magazine is incompatible with standard G20/G21 magazines and requires the dedicated Advantage Arms conversion kit to function properly.