F.N. PS90 Rifle Magazine 50 Rounds

This appears to be a translucent polymer high-capacity rimfire magazine with a winding/locking cap—confirm it’s for .22 LR and check exact platform compatibility (e.g., specific AR-22 or dedicated rimfire conversion) because it will not fit centerfire rifles. The clear body makes round count and spring condition easy to inspect; use quality high-velocity .22 LR rounds, keep the feed lips, follower and cap clean, and avoid long-term storage fully loaded to preserve spring life. Always verify the listing’s model fitment, obey local capacity laws, and function-test at the range before relying on it.