The coverage is very fragile.

[shadics]

I've noticed that any type of weapon can destroy almost anything within the game. Even my assault rifles can break stone walls with a single shot. I saw that the Brutal-OXCE mod has an option to make cover indestructible or much more fragile. Does that mean there's a universal way to increase the durability of cover? If so, where do I need to look?
 

[Meridian]

If so, where do I need to look?

In BOXCE, under Options > Advanced > BOXCE > Terrain destructibility