Spitfire Armory - EX Tactical Front Sight - ST for Remington single plain barrel Designed for no-ribbed barrels with factory bead. Bead must be removed on some guns (see installation instructions on Spitfire Armory website) Clamp is CNC machined from 6061-T6 aluminum with matte black hardcoat anodized finish; engineered and machined in the USA Comes with shims to fit a range of barrel diameters Optional Front Sight Accessory Rail can fit on either side Use with the Ghost Ring EX Rear Sight for complete system (see image)