Iron sights have been trusted by rifle shooters for centuries, but one of the inescapable drawbacks of irons is the fact that they have to cover the target for an accurate shot. What if you could see your target while getting your sights aligned? That's exactly what the Ultradyne C4 Offset Front Sight is designed to do. Unlike traditional front-sight posts, each Ultradyne C4 Front Sight features a hole drilled through its center. To get an AR-15 on target, shooters simply have to align the hole in the front post with a compatible rear sight to form concentric rings. This innovative sighting system is part of the Dynalign technology used to form the company's "circle-with Mfg: Ultradyne Usa