A small cloth pouch that attaches to the M249 SAW machine rifle. It holds up to 150 5.56mm linked rounds. Used when a regular 300 round drum is inconvenient for the mission.
This pouch gives the weapon the slight appearance of having an actual "nut sack".
Example: Private Johnson... Be sure to have four 100 round nut sacks on you when were out on mission. You're the squad's only SAW gunner.
A sack of nuts. There are many types of nuts, such as coconuts, peanuts, almonds, cashews, and you can actually collect and carry the nuts around in a special bag called a nut sack. Once you're ready to eat them, you can also stick the nuts into your mouth! But be careful, you might choke!
Example: "I brought my nutsack to work yesterday."
"Where is it? Can I see?"