said rifle was used in Combat, and givin its own model, you can find serveral combat pictures of this rifle, one is in the National rifleman in 1943 shows a troop aiming it in the brush.
stock used on the ones iv seen pictures of were grasping grooves, and the rifles had not sight covers. with a taller front sight.
there is a nother 1903 carbine. that never made production, i have a few pictures someplace, the sling swivle is set in the side of the stock, and the front swivle is also modified for the side, 18" barrel, with special sights.
the one o saw a picture of, had a brass plack on the side discribing it as 1903C carbine. experimantal trials rifle. or something to the effect, the RIA museum has a version of this rifle as well on display.