The Williams Gun Sight FP94/36 Adjustable Foolproof Receiver Rear Sight is a precision firearm accessory designed to enhance accuracy on classic lever-action rifles, pairing reliable Williams craftsmanship with a practical, foolproof design. This black, adjustable rear sight is engineered to fit Winchester 94 and Marlin model 36 platforms, delivering a durable, low-profile sighting solution that complements rifle iron sights without adding bulk. By providing adjustable elevation and a clear sight picture, it enables shooters to dial in precise shot placement across a range of loads and conditions, whether stalking woodland edges or engaging at moderate distances around the range. The Foolproof Receiver concept emphasizes straightforward setup and repeatable alignment, helping marksmen maintain consistent sight alignment from session to session. Built to endure field use, this sight integrates smoothly with existing receivers, offering dependable performance where rugged reliability matters most. Whether upgrading an aging rifle or outfitting a collector piece for practical shooting, the FP94/36 from Williams Gun Sight brings proven accuracy, sturdy construction, and a timeless, utilitarian aesthetic to rifle parts and rifle iron sights.