Which of the following is a similarity between pistols and rifles?

Pistols and rifles share the characteristic of firing single projectiles known as bullets. This is a fundamental aspect of how both types of firearms operate. Regardless of their design or intended use, both pistols and rifles are designed to discharge ammunition containing a bullet, which is a solid projectile.

This distinction is significant when comparing firearms, as it highlights the mechanics of how they function. While pistols are often designed for shorter-range shooting and portability, and rifles generally have more range and accuracy due to their longer barrel design, both still utilize bullets as their primary ammunition type.

Understanding this connection helps in recognizing the fundamental principles of ballistics that apply to all firearms, regardless of their specific design or use case.