Very realistic replica that is practically identical to the real thing. Has an optionally illuminated reticle(red) with brightness adjustment settings. This optic works as both a non-magnefied aiming sight and a magnified optic by switching a lever on the bottom of the sight. There is a small dent on the optic shroud(pictured), but does not affect the performance of the device. The 4x zoom function has the reticle slightly off-center. It's not a huge deal.