The rebounding hammer is an excellent invention - largely from the 'safety' standpoint.
It allows the hammer to rest in the lowered position on a live round, yet remains safe against jarring that could fire the primer.
From the accuracy standpoint - in operation there's no difference between it and it's older brother, since both designs act in concert to detonate the round successfully.
At the distances encountered in C&WAS - 'accuracy' doesn't seem to play the same part as it does at Camp Perry.
Removing any safety device is generally not the best of ideas, and should an accident happen, can lead to a lawsuit of fearsome proportions.
Vaya,
Scouts Out!