No one should put the word "Sniper" in the same sentence as "Barrett". None are accurate enough to be a Sniper rifle. We were issued the M82A1 when I was a Scout/Sniper in the Corps.....it was an anti-material rifle, as in LARGE material. The Brit SAS used them during Desert Storm to take out SCUD missile launchers They shot the armored control boxes, which were quite large, to disable the launchers.
The M107 is better, but still ain't there.
The M249 SAW is an outstanding light infantry weapon. Before I was a S/S I was a SAWgunner. Loved it. Didn't mind the weight, but 18lbs shouldn't be an issue for a 17-20YOA grunt. Rugged and extremely reliable, I had no issues with mine. Was 100% reliable with belts and mags, live ammo and blanks. Drug it through the mud of the Squad Leaders Course in NTA in Okinawa and ran perfectly during the test-fire at the end.
I notice that Marines commonly talk about what a great weapon the SAW is, while the Army dogs it. Makes me wonder why Big Green can't keep their SAW's running......
I didn't say they didn't run... Oil them, and they run pretty well. I know the saw is awkward to carry, I could never find a comfortable way to hump it. As a matter of fact, I liked humping the 60 better.