The Kriss brand brings precision-focused functionality to the Defiance Rear Flip-Up sight, a low-profile steel addition designed for the AR-15 platform that blends rugged reliability with quick, instinctive targeting. Built in a sleek black finish, this folding rear sight sits securely on a Picatinny rail, delivering a durable, snag-free profile that remains out of the way during rapid engagements or precision drills. Its folding mechanism keeps the sight out of the line of sight when not in use, yet flips up smoothly for immediate alignment with the front sight or optic when the moment demands accuracy at varying ranges. Engineered for long gun applications, it provides a stable reference point without adding bulk, enabling you to maintain a natural cheek weld and steady field of view in dynamic shooting scenarios. Ideal for rifle enthusiasts seeking a dependable rear sight that integrates seamlessly with existing iron sights or optics on a Picatinny-ready platform, this Defiance sight from Kriss combines practical geometry with robust steel construction to support reliable zero retention, repeatable performance, and quick transition maintenance across field, range, and competition environments.