Advantage Arms Conversion Kit 22LR 4.49" Barrel - 10 Round Magazine - Fits GLOCK 20/21 Gen 4

Manufactured by Advantage Arms
SKU: AAC20-21G4
MPN: AAC20-21G4
Manufactured by Advantage Arms
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There are a ton of reasons to use a conversion kit on your Glock handgun. Whether you shoot a lot and want to save money on ammo, training new shooters before stepping them up to larger calibers, or just want a fun plinking gun. The Advantage Arms Conversion kit allows you to shoot 22 LR out of your Glock 20 or 21 Gen 4 handgun. This .22LR Conversion Kit is a simple drop in slide unit and 10 round magazine that doesn’t require any permanent modification. The slide is compatible with standard Glock style sights, so you can choose your favorite aftermarket sights. It also features an internal firing pin safety like the full size models to prevent the firearm from discharging if dropped. Additionally, like the full size handgun, it features a last round hold open. The Advantage Arms Glock .22 Caliber Conversion Kit features a 416 Stainless Steel barrel.

Note: For maximum reliability, use with stock Glock components.

  • Gen 4 Glock 20/21

  • Installs in seconds
  • Compatible with Glock sights
  • Last round slide lock
  • Internal firing pin safety
  • 416 stainless steel barrel
  • Hardcoat anodized aluminum parts
  • Black oxide steel parts
  • 10 round magazine
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BrandAdvantage Arms
Mount Compatibility
Optics ReadyNo
PlatformGlock Handguns
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

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