1911 Adjustable Night Sight Set. This is a fully adjustable standard dovetail(novak compatible) style rear sight and .200" front sight. Precision made from bar-stock steel, Green Trijicon brand tritium with white outline, great for all light conditions. Works with all standard novak style dovetail cuts, .495 x 65 Degree. Sight does have dovetail locking screws, Made in the USA.