Don't know how to reproduce, seems random.

When it happened to me, each time, I was shooting, it was working on my screen with sound and everything but the zombie was not dying (M4 at like 3 meters, not me missing), but my friend 10 meters away told me that on his side he only heard a "click" sound like if I had no ammo. Then, when your reload, the new magazine is placed in the weapon but not visible on the model, and the bug is here.

Also when you try to drop the mag on the ground, there is a kind of "stop sign" popping on the mag for a second.

I tried to:

• Disconnect with it in hands and reconnect
• Try to click on a mag on the ground with the "Attach" option
• Try to put the mag in my inventory
• Try to put the mag on the ground
• Use a quick-bar action with a mag
• Press R long enough
• Give it to my mate and tried the same things

I even dropped the gun, ran away, had a server restart/crash IDK, went back to the M4 just in case, and it was still bugued.

Here is a screen trying to drop the mag with the "cross" sign

And here a screen just with the bug