Arms Sa Flp Up Rear Sight-a2 Ap

The A.R.M.S. #40 Stand Alone Flip-Up Rear Sight is a combat-proven backup sight system designed for AR platforms and precision rifle applications. This spring-loaded flip-up rear sight delivers a horizon line notch profile optimized for 500–600 meter distance engagement, making it an essential backup optic for operators who require rapid target acquisition when primary optical systems fail or are compromised. The sight maintains zero repeatability through its well-engineered spring mechanism, ensuring confidence in holdover adjustments across extended range operations.

Quick-release lever actuation is the standout design feature—the lever prevents accidental deployment while remaining operable even with cold-weather gear or tactical gloves, a critical consideration for patrol and field operations. The windage adjustment range of 0.75 inches allows precise zeroing to matched ammunition and barrel combinations. Its compact footprint (2.5" × 2.25" × 2.75") and lightweight construction at 0.13 lbs minimize rail space consumption and weight penalty, making it suitable for both duty rifles and precision platforms where every ounce impacts overall system balance.

This sight is engineered for law enforcement, military, and competitive shooters who require a redundant aiming system capable of functioning without electronics or remote batteries. The stand-alone design eliminates rail-mount dependencies, making the A.R.M.S. #40 a reliable addition to patrol carbines, training platforms, and precision systems. Operators appreciate backup sights that hold zero through rough handling and repeated deployment cycles—this model's proven track record across professional applications reflects that durability standard.