The CZ Rimfire Rifle 17 HM2 Single Shot Adapter Magazine offers a convenient solution for budget-friendly practice sessions with your CZ 455, 457, or 512 rifles. This factory adapter magazine transforms your standard magazine into a single-shot holder for .22 LR or .17 Mach 2 cartridges. Made from lightweight yet durable polymer, this adapter ensures a secure and sturdy build while keeping the overall weight low. It's the perfect tool for those looking to enjoy cheaper target practice with precision and ease, compatible with various CZ rifles for added versatility.