"Thumb loops" were a must - especially w/gloves or in colder weather.
We placed a small, OD plastic wrapped combat dressing at the bottom of each magazine pouch to raise the magazines for easier access and so each man carried plenty of dressings.
We also cut about 1/2" off the upper front of the pouch to make it easier to slide the magazines out.
FOG tips - a bit 'dated' now but still good to know and applicable if it becomes necessary to 'borrow' older style gear still found throughout much of the world.
Richard's $.02
You mean, 7/8th of the world?
Uncle Sam issued me some pretty cool, custom stuff. It was often left behind so we could look like the locals.