Non-powder firearms, such as BB guns, are considered safer than traditional firearms and are often marketed toward younger demographics as children’s toys. Recent advances in compressed-gas technology have drastically increased the firing power of these types of firearms, which has caused them to be more dangerous and capable of causing severe injury. We report the case of an 11-year-old male admitted for nasal injury caused by a BB gun pellet. The projectile had an unpredictable course: it pierced the skin of his left nasal sidewall, traversed through the soft tissues of the nose to the right nasal cavity violating the posterior septum, and lodged in the right posterior ethmoids adjacent to the posterior attachment of the middle turbinate. The metallic foreign object was successfully retrieved from the right nasal cavity via an endoscopic approach after minimal endoscopic dissection, guided by the preoperative radiologic imaging.