In Editor preview
When you mount a supressor on the MXC, and ONLY a suppressor, without scope or laser, it pops an error dialog, and the MXC image is no longer avalaible in the invotory.
If you mount back a scope or dismount the suppressor, the image comes back
Whatever the order of mount/dismount. If you only have the suppressor, the image disappears
Not tried in multiplayer.