This Star Rear Scope is a replica of the real steel one, which is designed for use in conjunction with a red-dot sight. This Rear Scope works as a magnifier and obviously the red-dot sight provides the red-dot aiming. The benefit of having a separate magnifier and red-dot is that when in CQB situations, you can remove the magnifier and use just the red-dot for aiming.
The quality of this Star product is very nice and is made from metal with coated optics that provide crisp optical quality.
NOTE: Gun and red-dot are not included.