remember also that german WW1 rifles were used in WW2 and got alot of use.
there are no junk rifle issued to soldiers by any country. it seems for americans every thing is junk.the jap middle to end rifles were substitute standard as was out springfield with stamped trigger guard magazine.I had one traner the bore was from both ends and just barely met in center.the other was cast steel receiver with bolt locking into barrel.I have 5 arasakas in 7.7 and two in 6.5.couple have guards on front sight and couple dont.I would fire and do all.I know of no bad guns by any country except last of germany in WW2.I was in WW2 and was born in 1924.so I am aware of some. I had a ww1 mouser before ww2. I gave a dollar for it.guns were cheap lugers $20 in 1946 to 1950.smiths and colts were not common H&R and Ivers were.just because they are not up to your standards does not mean they are junk.I have most military arms or have had them.
the 1917 was used because we had nothing no MGs no rifles no army,no planes and were ill prepared most troops used 1917s.and we used french and british MG.and french planes.