The Advantage Arms .22LR conversion kit for Glock 20/21/20SF/21SF transforms your full-size 10mm into an affordable, low-recoil rimfire trainer without swapping frames or slides. Built for Gen 1–3 Glocks, this 4.6" barrel conversion is a smart way to keep trigger time sharp at the range while drastically cutting ammunition costs—especially valuable when centerfire rounds are hard to find or your budget demands it.

Installation takes about 30 seconds and requires no gunsmithing; you'll be shooting .22LR in the time it takes to field-strip your pistol. The conversion maintains the ergonomics and manual-of-arms of your Glock, so practice drills translate directly to your carry or duty gun. Adjustable sights let you dial in zero, and the last-round lock-open feature gives you the same tactical feedback you'd get running your 10mm.

This kit is ideal for shooters who want to stretch their ammo budget, introduce shooters to a lighter-recoiling platform while keeping the same manual controls, or simply run high-volume practice without the wear and cost of 10mm. Whether you're a competition shooter, a hunter looking to train year-round, or someone who just wants to shoot more for less, a .22 conversion unlocks genuine utility from a gun you already own. Backed by a one-year factory direct warranty, it's a low-risk way to maximize trigger time.

The Advantage Arms .22LR conversion kit for Glock 20/21/20SF/21SF transforms your full-size 10mm into an affordable, low-recoil rimfire trainer without swapping frames or slides. Built for Gen 1–3 Glocks, this 4.6" barrel conversion is a smart way to keep trigger time sharp at the range while drastically cutting ammunition costs—especially valuable when centerfire rounds are hard to find or your budget demands it.

Installation takes about 30 seconds and requires no gunsmithing; you'll be shooting .22LR in the time it takes to field-strip your pistol. The conversion maintains the ergonomics and manual-of-arms of your Glock, so practice drills translate directly to your carry or duty gun. Adjustable sights let you dial in zero, and the last-round lock-open feature gives you the same tactical feedback you'd get running your 10mm.

This kit is ideal for shooters who want to stretch their ammo budget, introduce shooters to a lighter-recoiling platform while keeping the same manual controls, or simply run high-volume practice without the wear and cost of 10mm. Whether you're a competition shooter, a hunter looking to train year-round, or someone who just wants to shoot more for less, a .22 conversion unlocks genuine utility from a gun you already own. Backed by a one-year factory direct warranty, it's a low-risk way to maximize trigger time.