The Magpul MBUS Rear Sight is a polymer folding backup rear sight for compatible M1913 Picatinny and STANAG 4694 rail systems. It provides a compact backup aiming reference with a spring-loaded deployment system and tool-less windage adjustment.The dual-aperture design gives customers a practical rear sight option for matching with a compatible front sight and primary optic setup.Key Features Rear backup sight for compatible M1913 Picatinny and STANAG 4694 rails Spring-loaded flip-up deployment Tool-less windage adjustment Dual-aperture rear sight design Impact-resistant polymer construction Available in multiple Magpul colors Made in the USA Compatibility NotesDesigned for compatible M1913 Picatinny/STANAG 4694 rail systems. Confirm rail height, front sight pairing, platform fitment, and use-case requirements before ordering.What’s Included1 Magpul MBUS Rear Sight in the selected color
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