I thought AEM did a pretty good job of answering his own question.
I do have a problem personally though with the constant hammering of the M1A/M-14 as being big and bulky, heavy and 'not suitable for use as a tactical rifle', what ever one of those is. My M1A is not cumbersome at all, indeed, I find it quite handy.
Nemo Me Impune Lacesset
"The trouble with our liberal friends is not that they're ignorant; it's just that they know so much that isn't so.".........Ronald Reagan