1903-A3 Springfield Bolt made by Brown and Shape. These bolts were made under contract to the US Government for new and replacement bolts for the Remington and Smith Corona 1903-A3 rifle. This bolt with it's full safety lug is correct for how they came if complete. It has the U stamped Striker, the B.P. (Brown Presision) bolt sleeve, unmarked safety and is reblued using the original Black Oxide process. Will fit any 1903 or 1903-A3 Rifle. When replacing a bolt always have the headspace checked.