Alloy receiver, blued finish, slab side barrel, brown wood textured grips, finger grooves blowback action, single-action trigger, adjustable/fiber-optic sights. The Buck Mark Plus UDX stands apart from the rest of the Buck Mark pistol line, focusing not just on accuracy and function, but accentuating the look and feel, giving you a premium semi auto 22 pistol. Integrated grip. The grip frame is machined with finger grooves that match up to the textured wood grips. The slab side barrel has highly polished flats for a highly attractive accent. The TRUGLO/Marble Arms front fiber-optic sight gives superior target acquisition even in low light conditions, and you can dial it in tight with the Pro-Target adjustable rear sight.