Description The Advantage Arms conversion magazine is a 10-round .22 Long Rifle magazine designed for Glock 17 and Glock 22 pistols when used with an Advantage Arms rimfire conversion kit. It is molded from polymer and finished in black. The magazine features a last-round hold open and is intended for economical range training; it requires an Advantage Arms Conversion Slide Kit (not included). Key Specifications The magazine capacity is 10 rounds. The cartridge is .22 LR. Compatible with Glock 17 and Glock 22 when used with an Advantage Arms conversion kit. Constructed from polymer. The finish is black. Includes a last-round hold open. Designed for use with Advantage Arms rimfire conversion slide kits. The package quantity is 1 magazine. Product type is magazine. Make listed as Glock for fitment reference. This magazine offers a practical, cost-effective option for routine range training with Glock-pattern pistols fitted with Advantage Arms conversion kits. Its polymer construction and last-round hold open provide straightforward, reliable function for high-volume practice and rimfire training sessions.