Canadian Firearms Safety Course (CFSC) Practice Exam

The percussion cap is a critical component in the firing sequence of certain firearms, particularly those that use a firing pin mechanism. Its primary function is to explode or ignite when struck, which produces a small but intense flame or spark that travels through the firearm's ignition system. This ignition then sets off the powder charge within the cartridge, leading to the firing of the bullet.

By playing this pivotal role, the percussion cap ensures that the firing sequence is initiated reliably and safely. The cap must be designed to respond effectively to the impact from the firing pin, demonstrating the importance of its construction and materials in facilitating a successful shot. Understanding the role of the percussion cap is essential for safe operation and maintenance of firearms that utilize this technology, as it directly impacts their performance and reliability.