The NcSTAR MARFLR 223/556 Flip-Up Rear Sight enhances your shooting experience with a precision-engineered design, ensuring accuracy and reliability in critical moments. Specifically crafted for the AR-15 platform, this flip-up rear sight serves as a dependable back-up iron sight, complementing your optics and providing peace of mind during your shooting endeavors. Constructed from durable aluminum and steel for maximum stability. Lightweight design at just 3.7 ounces, preventing extra bulk. Compact dimensions: 1.3 inches extended and 1.9 inches folded. Easy installation on any Picatinny rail with seamless mounting. Quick deployment with an intuitive flip-up mechanism. Elevate your shooting arsenal with the NcSTAR MARFLR, engineered to meet the demands of every shooter.