Winnie's rifle looks like a M1903 with an Ordnance truck mounted Weaver 330 or MB73A1 over the rifle rear sight, front mount on sight base or barrel, rear mount on receiver ring. Many one off items were made up by units in the field. I met a Ranger sniper who told me his unit replaced the stamped trigger guard assembly with milled parts on his M1903A4. (Italyicon, 1944)