Don't worry: It's not required!
Why is this useful? Well, for starters, you should keep track of how many rounds you've fired. Most modern guns can be shot many thousands of rounds. Even so, taking your critical, self-defense weapon to a gunsmith for a checkup after 5,000 rounds might be a good idea.
Sound like a lot of rounds? Not as many as you think! Practicing your skills takes time at the range. Keep track of it here: