Skinner Big Boy Express Sight

The Skinner Big Boy Express is the standard receiver peep upgrade for Henry's pistol-caliber Big Boy lever guns, and it solves the single biggest weakness of the factory rifle: the semi-buckhorn rear sight that swallows the front bead in anything but bright daylight. Skinner machines the sight body from solid bar stock in blued steel, brass, black-gold, or stainless to match the receiver, and it bolts to the factory rear drilled-and-tapped holes with no gunsmithing.

A receiver-mounted aperture moves the rear sight back toward the eye, which lengthens the sight radius and lets your eye automatically center the front post in the ring. That is faster and more precise than a notch-and-bead at every distance inside 150 yards. The sight ships with the .096-inch aperture installed and accepts five aperture sizes, so you can run a large ghost-ring opening for speed or a small target aperture for precision. Both windage and elevation are adjustable.

This fits the H006 brass and H012 steel Big Boy family in .32, .357, .41, .44, and .45, including carbine, side-gate, and big-loop variants. It does not fit the large-frame .45-70 and .30-30 rifle-cartridge Big Boys, which use a different receiver. About half of shooters keep the factory front sight; Skinner recommends pairing it with a taller Patridge or fiber-optic front if the original sits too low for your zero.