The Type 38 Japanese Arisaka saw service in both WW1 and WW2. It was designed with a specialized dust and mud cover to protect the action of the gun in the filth of war.
How will it do with the InRange mud test?
Let's find out...
PS: Don't forget to check out C&Rsenal's episode on about the Arisaka here: https://www.youtube.com/watch?v=beDlh_1tBHE