Beretta-PX4-Magazine-13-Rounds

This appears to be a steel single-stack/extended pistol magazine (commonly used in 9mm/9×19/9 Para pistols) — verify the listed caliber and exact pistol model/generation before buying because mag-catch cuts, capacity and fit are model-specific. Steel construction is durable but inspect feed lips, follower and spring for dents, corrosion or damage. Avoid over-loading on first use, lightly lube the follower if needed, and always function-test the magazine several times in your firearm at the range to confirm reliable seating, feeding and lock-back. Follow local capacity and storage laws and store magazines unloaded for long-term spring life.