The owner's manual that comes with this CO2 gun mentions that it comes with a fully adjustable rear sight. It does not. The older 2250 carbine & the 2240 pistol had rear sights. The Outdoorsman 2250XE is a special model that has only a post front sight & the scope. No rear sight is included. Crosman Outdoorsman 2250XE Uses 12-gram CO2 cartridges Bolt-action Single-shot Skeleton wood stock 11mm scope dovetail Post front sight No rear sight, but you can attach one on the dovetail 14.25" pull length Incl. CenterPoint Optics 3-9x32 scope, rings & trigger shoe The scope comes with a set of rings, plus Crosman has included an extra set of high rings. Our images show the scope mounted on high rings, which we believe will be needed to bring the scope to the proper eye level for most shooters.