The #12 Slot Blank is used when the rear sight is removed from a barrel. This is often needed when a receiver sight is installed, as the factory rear sight may be visible in the sight picture. Fits into standard 3/8" dovetails.
This open rear sight with elevation adjustable blade is the perfect auxiliary sight for scope-mounted rifles. When not in use, the sight folds close to the barrel. Designed to fit 3/8" dovetail slots.
