The Talley Peep Sight is a unique solution for a shooter or hunter looking for a quick-attach iron rear sight. The sight is designed to install quickly onto a rear Talley scope base to provide a fast-handling sight solution after a scope is removed. Sturdy steel construction, adjustable for windage via a dovetail (same as standard Talley Steel Bases) secured by a set screw. Blue. Installation of this sight will require milling the rear base lug flush with the surface of the base, allowing the sight to slide forward onto the base. Secures via a thumb screw.