Ultradyne C4 Folding Frnt/rear Combo

The Ultradyne C4 Folding Front/Rear Combo is a dual-aperture iron sight system engineered to redefine backup sight performance on modern rifles and carbines. This folding front and rear sight combination delivers the precision and reliability operators demand in close-quarters battle, patrol, and precision rifle applications where secondary aiming systems must function flawlessly under stress.

The C4 rear sight features a ballistically calibrated elevation system with 50-yard increment adjustments spanning 200 to 600 yards, enabling rapid target engagement across practical combat distances without fine-tuning. The front sight incorporates precision aperture technology with independent windage and elevation adjustment capability, eliminating the need to rely on cowitness geometry alone. Together, these sights achieve perfectly concentric optical alignment—eliminating parallax error and cross-contamination between front and rear adjustments. At 0.5 lbs and measuring 4.75 x 2.25 x 6.75 inches, the folding configuration minimizes profile when stowed and deploys rapidly when needed.

Law enforcement, military personnel, and competitive shooters rely on the C4 combo when primary optics fail or are compromised. The compact folding design preserves rails for thermal imaging, magnified optics, or additional accessories without interference. This sight pair excels in low-light environments, austere conditions, and scenarios where battery dependency is unacceptable. Serious shooters integrating backup iron sights into a complete aiming system will find the C4's independent adjustment architecture superior to traditional cowitness setups that force compromise between front and rear sight heights.