Taser bullets aren’t exactly a new concept—a bullet that zaps you with an electric jolt like a Taser.

That’s what the U.S. Marine Corps wants as a non-lethal munition that can be fired from a regular small arm. The U.S. military has been trying to develop a Taser-like bullet for 12 years but has yet to succeed. This time, the Marines hope to get it right.

The U.S. military already uses regular X-26 Tasers, pistol-like devices that fire two wired electrode darts that transmit a jolt to incapacitate a target. But not surprising for a device designed for civilian police forces, the wires limit an accurate shot to less than 25 feet, and the target is disabled for only about 5 seconds.