Advantage Arms Conversion Kit, 22LR, 4.02 Barrel, Fits Glock Generation 4 19/23, Black Finish, Standard Sights, 1-10Rd Magazine, Includes Range Bag AAG19-23 G4 Convert your Glock into a .22 or with an Advantage Arms conversion kit. Advantage Arms Glock Conversion Kit is Advantage Arms most accurate conversion kit for Glock.