A bullet is not the only part of a gun that can cause injury. Hearing protection will protect the eardrums of the shooter and those nearby. These can be inexpensive foam earplugs or more costly hearing protectors that have a Noise Reduction Rating or NRR. The higher the NRR number the better. Eye protection should be worn at all times while shooting or observing other shooters. Their impact-resistant lenses protect against bullet fragments, stray bits of gunpowder, and other debris.