Depends on the gun.
Some guns can be safely dry fired, others don't care for it.
Use some
Snap Caps if you are unsure.
I do.
Save that firing pin!!!
These snap caps are ideal for practice. An internal spring saves your firing pin from repeated shock and a brass "primer" cap makes it feel like the real thing. The bright red color makes sure you don't confuse with live ammo. Formerly ArmSport brand.
9mm - 5 Pack
$11.29