Advantage Arms Magazine Glock 20/21 All Gen .22 Long Rifle 10-Round. 22lr Magazine. Lifetime Warranty On All Advantage Arms Magazines. For all Generations Specifications for Advantage Arms Glock 20/21 All Gen .22 Long Rifle 10-Round Magazine: Manufacturer: Advantage Arms Gun Make: Glock Gun Model: Glock 20 Gen 3 Glock 21 Gen 2 Glock 21 Gen 4 Glock 20 Gen 4 Glock 21 Gen 1 Glock 21 Gen 3 Glock 21 Glock 20 Caliber: .22 Long Rifle Magazine Capacity: 10 Round Color: Black Finish: Matte Black Quantity: 1 Fabric/Material: Nylon filled polymer Gun Type: Pistol Package Contents: Advantage Arms Glock 20/21 All Gen .22 Long Rifle 10-Round Magazine What firearm models does the manufacturer say Advantage Arms Glock 20/21 All Gen .22 Long Rifle 10-Round Magazine is compatible with? The manufacturer says that Advantage Arms Glock 20/21 All Gen .22 Long Rifle 10-Round Magazine is compatible with Glock 20 Glock 21 Glock 21 Gen 3 Glock 21 Gen 1 Glock 20 Gen 4 Glock 21 Gen 4 Glock 21 Gen 2 Glock 20 Gen 3Advantage Arms 20MAG-10RD: Magazine Glock 20/21 All Gen .22 Long Rifle 10-Round