The Advantage Arms Conversion Kit transforms your Glock pistol into a .22 LR platform with quick 30-second installation and includes a convenient range bag for easy transport.Advantage Arms Glock 20/21 Conversion KitConverts to .22 LR caliber ammunition4.6" barrel length with 10-round capacityFits Glock 20/21/20SF/21SF Gen 1-3 (does not fit Gen 4)Adjustable sights for precision shootingLast round lock open feature30-second installation - no gunsmith requiredIncludes range bag for convenient storage and transport1-year factory direct warrantyPerfect for cost-effective training plinking and target practice while maintaining the familiar feel and operation of your Glock pistol. Ideal for shooters looking to reduce ammunition costs without sacrificing training time.