The Specialty Iron I Rifle Peep Aperture 3/64" offers a precision solution for shooters dealing with star-bursting or blurry reticles, posts, or fibers. Engineered for top-tier accuracy, this aperture is part of the Iron I peep system and requires the compatible Iron I Peep Housing (sold separately). It features Optical Centered Technology (OCT), Protected Lens Technology (PLT), and Tool-less Aperture Technology (TAP) to deliver durability, clarity, and convenience. Designed for fast changes and cleaning, this black-finished aperture is a favorite among serious iron sight users.