Manufactured in 1904, with a "RIA/5-05" marked barrel, the standard four-line address over the serial number on the receiver ring, single vent hole, and an early pattern un-canted bolt. Nearly all elements of the early U.S. 1903 rifle were the subject of later overhaul and revision, especially the early barrels, which were often discarded and replaced with ones chambered for 30-06. The straight wrist stock is fitted with a single reinforcing bolt, stamped "S" on the tip, faint cartouche on the left side, a brown leather sling and a smooth buttplate.