Okay, that was true, changed it on items_inventory.xtbl and now the shotgun works.
But the pistol doesn't work.
Pistol appears, at least the mesh does, but it is like 10 metres away from the player so he isn't holding it right, he can't shoot, etc.
I did the same procedure as shotgun, changed "p_beretta" to "cut_pistol" and the rest. What's wrong? Something special about it?