There is a situation, that has long troubled our RT/DW/BC, and now OW, gaming group which we hoped would have been clarified in Only War, but so far hasn't been touched.
The situation I am talking about is the fact of destroying enemy guns. Ever since I wanted to make a sniper Tactical Marine, who specialized in denying enemy resources/weapons we have had the problem of how much guns and such can actually take damage and what are the effects of shooting them. While the vehicle Weapon critical hits on page 206 of OW are a bit of a step forward, there is still room for improvement.
Black Crusade brought us the ruling that Daemon Weapons have "Uncanny Resilience"(page 194 of Black Crusade core) and as such have a natural armour of 20, but it still fails to tell us that are the weapons destroyed if they take a hit of 21 damage or more.
So now I ask you, do you think what I am wondering is a valid question? I, for one, see huge potential in being able to destroy the heavy guns that the enemies are using. If for example, you are against a horde of dirty traitor guardsmen manning a single mortar, isn't it better to simply deny the mortar from the enemy at large instead of using valuable Imperial ammunition to slaughter the horde manning it one by one? Of course if you destroy something like a mortar, your squad can't use it themselves either!
What I am suggesting is that it would be nice to have some sort of official ruling that how much armour and "structural integrity" different craftmanship and size weapons have. This wouldn't require more than some sort of small table saying what effects improved have and whats the baseline difference between a pistol, basic, heavy and mounted weapons. A best quality autocannon is going to be much harder to destroy than a poor quality stub revolver!