Presma AR-15 Flip-Up Rear Sight

Presma AR-15 Flip-Up Rear Sight Tactical Removable Rear Flip-Up Iron Sight Complete With Dual Aiming Aperture by Sniper(R). Equipped with a locking retention thumb nut. Precision Windage and Elevation Adjustments. The rear sight fits a high-profile gas block or top rail and includes a red laser and a carry system for use with a front sight tool. A must-have item. Features Color: Black Precision Machined Aluminum Precision Windage and Elevation Adjustments Thumb Nuts with Locking Retention for Maintaining Zero