Used it overseas on my C7A2-M203... definately one of my best kit purchases. It's well made, functions as advertised and took all the abuse of a tour and held up no problem.
It has alot of slack on it, so it doesn't matter if you're big or short, fat or skinny, you can make it work. And you will find a surprising amount of use for the quick adjust feature. Snug it up for walking around the fob so it doesn't flop around, readjust for patrolling with body armour, and if you are going to spend alot of time in the prone on a cold afghani night, you can slack it off a little bit for some extra room to work.
Dollar for dollar, it's the best two point sling around. Not designed for use as a single point sling, and it loses it's purpose if you just use the front sling loop and rear stock sling point.
Hope this helped!