Mr. Pub,
I recently purchased an M1A Scout rifle with the synthetic stock, and I am extremely impressed with the rifle.
I like the handling of the shorter M1A and it points quickly for me. The power of the cartridge is greater than .223, and I feel that practical accuracy of the Scout is greater than most ARs. I say this because I recently took a rifle course where the M1A shooters consistently outshot the AR shooters, excepting a few exceptional AR shooters. This is not to say that an AR cannot be accurate. I simply feel that the sight format/radius/??? seems to facilitate accurate shooting.
The gun is in no way uncomfortable to shoot, and the 10rd. factory magazines are indeed handy. I would like to get hold of some 20 round mags, but alas, I live in California. Maybe someday I'll find some that I forgot about deep in my attic!
Now the bad news:
What with all of the positive features of this gun, I feel that I can deal with the negatives, and it seems that the SEALs, as well as the Marine Corps DMs can too. However...
These guns are heavy-- much heavier than an AR. (By the way, I am comparing the M1A Scout to the AR, because I feel that if you want a true "scout" you need a bolt gun, and if you want a true long range accurate semi-auto rifle, why not go with the full size M1A? I therefore feel that the M1A Scout serves best as a do-it-all rifle that fits the bill of both semi-auto "assault/battle rifles" as well as accurate "scout" type systems. ) The weight is manageable, but by the second day of that course, my shoulder was getting sore from the constant rubbing of the military type sling.
The recoil of the M1A is significantly more than an AR. While not uncomfortable, uick repeat shots do take longer with the M1 than wiht an AR. Of course, they are faster than with a bolt gun, and the 7.62x51 hits with more athority than the 5.56, reducing the need for multiple hits.
There is probably much more to this discussion, as I am not a big rifle shooter, and have only taken one practical rifle course. Therefore take what I say for what its worth.
Lastly, buy one. I don't think that you'll be dissapointed. I have a ball with mine!