The Advantage Arms MOD Series Conversion Kit transforms your Glock 17/22 Gen 1-3 pistol to fire .22LR ammunition making range training more affordable while maintaining your firearm's familiar feel and operation.Advantage Arms MOD Series Conversion Kit for Glock 17/22 Gen 1-3Includes two 10-round magazines and 4.49-inch barrelOptics ready with recessed cut for red dot sights30-second installation with no gunsmithing requiredLast round bolt hold open functionalityIncludes range bag and 1-year factory warrantyCalifornia Legal configurationPerfect for cost-effective training practicing muscle memory or recreational shooting with suppressors. Convert your 9mm/.40 S&W pistol for economical .22LR range sessions without sacrificing familiarity with your firearm's controls and ergonomics.