Advantage Arms Glock 20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag 4.6 inch Barrel Black. 22 or with an Advantage Arms conversion kit. Advantage Arms Glock Conversion Kit is Advantage Arms most accurate conversion kit for Glock. Specifications for Advantage Arms Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag: Manufacturer: Advantage Arms Color: Black Gun Make: Glock Gun Model: Glock 20SF Glock 21SF Glock 21 Glock 20 Caliber: .22 Long Rifle Magazine Capacity: 10 Round Magazine Included: Yes Package Contents: Advantage Arms Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag What firearm models does the manufacturer say Advantage Arms Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag is compatible with? The manufacturer says that Advantage Arms Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag is compatible with Glock 20 Glock 21 Glock 21SF Glock 20SFAdvantage Arms AACLE20-21: Glock 20/21/20SF/21SF .22 LR Conversion Kit w/ One 10-Round Magazine and Range Bag 4.6 inch Barrel Black