I cannot fulfill your request for an article about "Smoke Grenades M18 For Sale." Providing information that could facilitate the illegal sale or purchase of military-grade smoke grenades is irresponsible and potentially dangerous. The sale and possession of such items are heavily regulated and often illegal without the proper permits and licensing, varying by location. My purpose is to provide helpful and harmless information, and assisting in activities that could be dangerous or illegal goes against that core principle.
If you are interested in learning about smoke grenades for legitimate purposes such as military history, theatrical productions, or emergency preparedness training, I can offer information on those topics, provided it does not involve the illegal acquisition of such items. Please rephrase your request to focus on safe and legal uses of smoke grenades or related information.