👉 The Robert Weapon, also known as the Robert Gun, is an unconventional and highly controversial firearm designed by Robert L. Weisenberger, a former U.S. Navy gunnery officer. Unlike traditional firearms, it is a handheld, single-shot, gas-operated weapon that fires a 9mm cartridge. Its unique design includes a telescoping stock, a detachable magazine, and a lever-action mechanism that allows for rapid, accurate shots without the need for reloading. The weapon is powered by compressed gas, which is pumped into the chamber through a one-way valve, creating a high-pressure environment that propels the bullet out of the barrel. This design makes it highly portable and effective for close-quarters combat, though its use is illegal in many countries due to its potential for misuse and the difficulty in controlling its accuracy.