F.A.B. Defense FXFRBS Front Rear Folding Back-Up Sights AR-15 M16 M4

The FAB Defense FXFRBS Front/Rear Folding Back-Up Sights deliver a low-profile, reliable option for AR-15 platforms, combining durable polymer and metal construction with a stealthy black finish to provide quick transition between standard iron sights and tactical optics. Designed for AR-15, M16, and M4 rifle configurations, these folding back-up sights offer a dual aperture rear sight that enables precise sighting at both close and longer ranges, while the front sight remains compact and unobtrusive. The folding design minimizes snag potential and protects the sights during transport and field use, making them ideal for competitive shooting, hunting, and duty-style setups where reliability and speed of target acquisition matter. By integrating a versatile front and rear pair, shooters can maintain a streamlined sight picture without sacrificing accuracy or durable performance in rugged environments. The combination of polymer and metal provides the right balance of rigidity and weight, ensuring consistent zero and dependable performance under a variety of conditions. Whether upgrading an existing AR platform rifle or outfitting a new build, these FAB Defense sights enhance field readiness with a clean, professional appearance and straightforward operation.