Amid all the hype about optics, is anyone still refining and perfecting iron sights? The answer is a resounding yes: Ultradyne USA has re-envisioned traditional iron sights and released a product that’s near revolutionary for AR-15 shooters.
Their C4 Precision Folding Sights are a dual-aperture system, designed similarly to the highly intuitive concentric sighting setup used by Olympic shooters. Rather than a squared-off front sight post, Ultradyne’s is shaped like this:
This bulb-like shape, with apertures drilled both front-to-back and side-to-side, so you always have an aperture to look through. Your front sight post doesn’t obstruct your target, which is huge. This design also makes for more fluid, natural target acquisition. Uniquely, the front sight is adjustable not only for elevation but also for windage. When you make any adjustment, the entire unit moves, so the front sight post is always centered. Thoughtful. Another benefit is that, because of the way your brain processes the view through an aperture, your target actually appears sharper and clearer.
Besides the 12 MOA front sight post aperture, 8-, 10- and 14-MOA apertures are also available:
The C4 sight can be mounted the standard way on your Picatinny rail, but, as highlighted in the video below, the front sight can also be mounted on the barrel, near the muzzle, using Ultradyne’s Dynamount system. This gives you the longest possible sight radius while ensuring your sight stays on target, independent of your free-floating hand guard. Bizarre? A little, but this system is a pleasure to use. This option is available for .223 and .308 barrels.
The rear peep sight provides 18 MOA of elevation adjustment, between 200 and 600 yards, and 40 MOA of windage adjustment. It ships with two interchangeable options for the aperture: one with 0.070-inch aperture and another with a 0.050-inch aperture. Conveniently, adjustments don’t require any tools and are easily done on the fly while you’re shooting. This smart design allows you to screw an unused aperture onto the elevation adjustment dial to keep it on hand:
Complete the combo with one of Ultradyne’s fine muzzle devices, and you’ve got a really sweet setup:
Overall, Ultradyne’s C4 Sights make every other BUIS setup look obsolete. Conceived with shooter comfort, ease of use, and sheer pleasure in mind, this design is a true accomplishment and a rare example of real innovation in an often overlooked aspect of firearms engineering.