The Disturbing Story Of The Heart Attack Gun Invented By The CIA During The Cold War

Let me tell you a story that feels like it’s straight out of a thriller—except it’s 100% real. Back in the heat of the Cold War, the CIA developed a weapon that seemed too crazy to be true: the heart attack gun. Think about it—a gun that could kill someone within minutes without leaving a trace! No loud bangs, no smoke, no mess. Just a tiny dart loaded with a shellfish toxin that would stop your heart. Sounds like something from a James Bond movie, right?

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This deadly invention came to light during the 1975 Church Committee hearings, a period when the U.S. government was under intense scrutiny. People were still reeling from the Watergate scandal, and they wanted answers—especially about what the CIA had been up to behind closed doors. And boy, did they get answers!

The heart attack gun, revealed to the public during these hearings, was designed with one purpose in mind: undetectable assassinations. The dart it shot was frozen, made of shellfish poison, and would melt immediately once it entered the bloodstream, causing a heart attack in minutes. The only trace? A tiny red dot where the dart entered the skin. No one would know unless they knew exactly what to look for.

This idea wasn’t just a product of some spy-novel fantasy. The CIA had genuine reasons to believe this could work. The Soviets had already used similar methods, with KGB agents carrying out assassinations using poison darts. The heart attack gun was developed in a CIA program known as MKNAOMI, an offshoot of the infamous MKULTRA, which experimented with mind control and biological warfare.

The gun’s creation was part of a broader effort by the CIA to explore wild, borderline unethical technologies. And yes, it was likely designed with specific people in mind. Fidel Castro, who had survived numerous assassination attempts, was likely one of the intended targets.

Although it’s unclear whether this weapon was ever used, its existence is a terrifying reminder of the lengths intelligence agencies were willing to go during the Cold War. The Church Committee’s findings were so shocking that in 1976, President Gerald Ford signed an executive order banning any U.S. government employee from engaging in political assassinations.

While we might never know the full extent of the CIA’s dark experiments, one thing is clear: the heart attack gun is a chilling example of how far Cold War paranoia could go (YourTango).