NcStar MARDRS A2 Back-Up Rear Sight Dual Aperture Black for AR-15

The NcStar AR-15 Detachable Rear A2 Iron Back-up Sight (dual aperture) is precision-made with aluminum and steel. The fixed A2 design is adjustable for windage and elevation and it mounts onto Weaver and Picatinny-type rails. Type: Rear Frame Material: Aluminum/Steel Frame Color: Black Firearm Fit: AR-15 Base Configuration: Picatinny Rail Style: Dual Aperture Front Material: N/A Rear Material: Steel Front Color: N/A Windage Adjustment: Yes Elevation Adjustment: Adjustable Firearm Type: AR-Platform