ahhhhhh.
as matter a fact, i know of 2 SC A3,s modified for sniper use, listed as 1903A4 snipers rifles, still in inevtory...
at least they were 3 years ago, they were set to be destroyed, along with many othet neet old sniper rifles..
i dont know, what branch did the modifications, or the exact history.
i close friend was the person in charge of the weapons storage, and had them saved for training, his a gun guy as well, but no longer with that unit.
a tour of the big sand box, changed a few things for him.