The Lee Shaver POST & APERTURE CARD for LYMAN 17A (.470'') is a versatile, blue universal marking and alignment accessory designed to enhance precision in rifle iron sight setups. Built to fit a wide range of universal rifles, this post and aperture card integrates seamlessly with existing front-post and rear-aperture configurations, helping shooters establish repeatable sight picture and accurate zeroing across different rifles and optics. The blue finish provides clear visibility during field or bench sessions, while its robust construction supports repeatable adjustments and reliable use in both hunting and target shooting environments. By enabling precise reference points for elevation and windage during sighting-in, the card supports faster, more consistent adjustments and helps maximize shooting confidence at varying distances. Its universal compatibility means it can be employed across multiple rifles, making it a practical addition for enthusiasts who value standardization and streamlined maintenance of their iron sight systems. Whether youre refining your rifles alignment, preparing for a competition, or improving field accuracy, this POST & APERTURE CARD delivers dependable performance, integrating smoothly with your existing sighting setup and helping you maintain sight alignment across sessions.