Sets available for Remington 870/1100/11-87 and Winchester 1300 shotguns equipped with slug or turkey barrels and factory sight sets. Front sight provides a glowing red dot that's easily seen in all ambient light conditions. Fully adjustable, U-notch rear has two glowing green dots for precise sight alignment. Mfg: Williams Gun Sight SPECS: Machined aluminum, black, anodized. Rear - "U" notch fiber optic. Front - Fluorescent red front bead on sheared-style blade. Includes instructions. Remington fits Remington shotguns with 3/8" dovetail front sight ramp.