Technically, yes, it's exactly like calling an M16 an AR-15. Even the semi-only (at least the later, production ones, don't know about prototypes) M14s had auto-parts, they were just locked into position. CO's had the "keys" more or less, I believe.
But really, what else ya gonna call 'em? Springfield's copyrighted M1A. M-14/S is a mouthful.. I usually just say "M14" or "M14 clone" and explain if I have to from there.
Oh, one last aside.. the USGI stock, made as it is for the reciever with a connecting rod attatched, is inletted too big. This can let your op rod retaining pin drift lose with firing. This can result in your oprod guide rod banging your mag. Much bad juju.. if buying surplus stock, is good to be filling in, as recommended in earlier threads.
-K