Before entering the firing range, which of the following must a shooter ensure?

A shooter must ensure that their firearm is of sound design and well maintained before entering the firing range because safety is of utmost importance in any shooting environment. A properly functioning firearm reduces the risk of malfunctions that could lead to accidents or injuries during practice or qualification. This includes checking for issues such as a blocked barrel, functional safety mechanisms, and overall good condition of the firearm's components.

While distractions, understanding range rules, and wearing appropriate clothing are important for a safe and effective shooting experience, they do not directly relate to the operational safety of the firearm itself. Therefore, having a reliable and well-maintained firearm is the critical first step to ensuring safety and effectiveness while shooting on the range.