The Smith Enterprise Nation Match rear sight is a precision machined and hand fitted complete rear sight assembly for your M1 Garand, M14 or M1a rifle. Precision machined from solid 4140 steel with a hooded competition aperture for a more precise sight picture. Little to no fitting should be required when installing this sight in your rifle. The sight is finished with Mil-Spec phosphate coating. The SEI National Match rear is a CMP approved rear sight for competition.