CAR-15/M4 360° HK STYLE FLIP-UP SIGHTS

The Brownells folding rear BUIS replicates the HK stlye sights. There are individual settings for 100, 200, and 300 yards, as well as a larger "combat" style aperture. A large attachment nut on the side allows for secure adjustment with a coin, blade, or wrench.


I'll update this with similar pictures to the others as soon as I get a chance.