The UTG ACCU-SYNC 45-Degree Rear Sight is precision CNC-machined from 6061-T6 aluminum and steel with a matte black anodized finish for durability and corrosion resistance. Its 45 angled offset design allows seamless use of iron sights alongside magnified optics. The dual-aperture rear sight features a tool-free windage adjustment wheel for quick and precise aiming. A Posi-lock retention plunger ensures the sight stays securely in place when deployed. For a stable zero hold it mounts with a single locking Torx screw and squared recoil stops on Picatinny rails.