Canadian Restricted and Non-Restricted Firearm Safety (CRFSC) Practice Exam 2025 – All-in-One Guide to Master Your Safety Certification!

The assertion that a firearm might malfunction despite proper maintenance is particularly relevant when incorrect ammunition is used. Firearms are meticulously designed to function with specific types of ammunition; using ammunition that is not compatible can lead to various issues such as jams, misfires, or even catastrophic failures. Proper maintenance, including cleaning and lubrication, cannot compensate for the fundamental incompatibility between the firearm and the ammunition being used.

When it comes to the other situations, while extreme weather conditions can indeed affect a firearm's operation, they do not guarantee a malfunction, especially if the firearm is adequately designed to handle such conditions. Additionally, firearms that have not been cleaned may experience malfunctions, but this does not pertain to the usage of compatible ammunition. Lastly, using compatible ammunition should ideally prevent malfunctions if the firearm is properly maintained. Therefore, the critical aspect here is the match between the firearm and the type of ammunition used, underscoring that incorrect ammunition is a surefire way to cause a malfunction, even when maintenance is up to standard.