[cadillac cowboy]

The German soldiers have see-through clips in their machine guns, so you can see that they definitely have bullets and are ready to go.

In close quarters, might that indicate to an opponent when a weapon was low on rounds as well?

[SJSAMPLE]

In cose quarters, nobody is looking at anything but the 15 feet directly in front of them. Something like a magazine is virtually unnoticed under the stress of CQB.