Modern guns are all supposed to be designed to be safe. They have lots of active and passive features built in to ensure that it only goes bang when the trigger is squeezed, it always goes bang when the trigger is squeezed, and a bang only results in a bullet being fired, rather than the gun exploding. The rest is up to the user.Aren't guns designed to be dangerous? It makes their existence pointless otherwise surely.
The new US army pistol had a nasty tendancy to go bang when dropped a certain way. Problem was fixed.
Remington ( now bankrupt) produced a series of guns that went bang or did not go bang randomly.