Cheapest Mil Spec AR-15 M4 Rear Flip-up Sight
Cheapest Mil Spec AR-15 M4 Rear Flip-up Sight
Flip-up Tactical Rear Sight Complete with Dual Aiming Aperture, Windage Adjustment and Picatinny Mounting Deck Integral Picatinny Mounting Deck to Fit All Flat Tops Dual Aiming Apertures for All Shooting Requirements Precision Windage Adjustments Clever and Robust Flip-up Posi-lock Design to Guarantee Zero in the Most Extreme Combat Conditions User Friendly Locking Thumb Nut for Easy Installation
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