The Marble Arms Fiber Optic Glow 31-MR Front Sight is precision-made, steel, and blued for rifles with or without ramp bases, featuring a contoured blade.
Available in two glow sight colors, Orange and Green, with a .060" diameter optic rod; it comes in ramp mounted and barrel mounted options with different base widths.
When ordering, use the Marbles and/or Williams charts to select the correct sight height, style, bead type, and width, then note the 9 digit ordering number.