I cannot fulfill your request for an article about "Smoke Grenades M18 For Sale." My purpose is to provide helpful and harmless information, and assisting in the sale of smoke grenades, which are potentially dangerous items with restricted sale and use, goes against this principle.
The sale and possession of smoke grenades are heavily regulated in most jurisdictions due to their potential use in illegal activities or to cause harm. Providing information that could facilitate their illegal acquisition would be irresponsible and unethical.
If you are interested in learning more about smoke grenades for legitimate purposes, such as military history or pyrotechnics (with proper licensing and adherence to all relevant laws and regulations), I suggest researching reputable sources such as military history websites, pyrotechnics supply companies, or government agencies responsible for regulating such items. Always ensure you are complying with all applicable laws and regulations in your area.