E1710 Trijicon Rifle Combat Optic (RCO) AN/PVQ-31A (A4)

The RCO is a fixed 4x optical aiming sight designed for use with the service rifle configured with the MILSTD-1913 Rail Adapter System. It attaches to the rail to provide the user a targeting tool to engage distant daylight and near low-lit targets with increased identification certainty. The reticles of the two RCO scopes appear identical. However, each reticle is specific to the ballistics of the weapon and is marked with identification (A4 or M4) at the bottom center of the reticle display.