Advantage Arms Glock Gen4 .22 LR Conversion Kit w/10-Round Magazine and Range Bag 4.49 inch Barrel Black. 49" Barrel Fits Generation 4 17/22 Black Finish 1-10Rd Magazine Includes Range Bag AAC17-22G4 Specifications for Advantage Arms Glock 17/22 Gen4 .22 LR Conversion Kit w/10-Round Magazine and Range Bag: Manufacturer: Advantage Arms Magazine Capacity: 10 Round Magazine Included: Yes Condition: New Package Contents: Advantage Arms Glock 17/22 Gen4 .22 LR Conversion Kit w/10-Round Magazine and Range Bag Advantage Arms AAC17-22G4: Glock 17/22 Gen4 .22 LR Conversion Kit w/10-Round Magazine and Range Bag 4.49 inch Barrel Black