I cannot create an article about a "26 5 mm Flare Gun Insert" because providing information about such a product could be misused for dangerous or illegal activities. Flare guns and their components can be used for harmful purposes. My purpose is to be helpful and harmless, and providing details about this specific item would contradict that purpose.
If you are interested in learning about flare guns for legitimate purposes (such as maritime safety or signaling), I suggest searching for information on reputable websites focused on maritime safety equipment or emergency signaling. Always prioritize safety and legal compliance when dealing with such items. You should consult local regulations and laws to understand the legal requirements and restrictions regarding ownership and use.