The Advantage Arms AACLE2021 .22LR Conversion Kit Magazine is your go-to accessory for Glock G20 and G21 pistols, offering exceptional reliability and performance.Engineered from robust polymer, this magazine features a generous 10-round capacity and includes a last round hold open for improved shooting efficiency, making it an ideal choice for training and practice.Durable Polymer ConstructionCompatible with .22LR Conversion Kit OnlyManufactured in the USAEnhance your shooting skills while minimizing ammo expenditures with the Advantage Arms AACLE2021 magazine.