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And here is something you all probably have never seen or heard about.


Its called a Gyrojet
The Gyrojet is a family of unique firearms developed in the 1960s named for the method of gyroscopically stabilizing its projectiles. Rather than inert bullets, Gyrojets fire small rockets called Microjets which have little recoil and do not require a heavy barrel to resist the pressure of the combustion gases. Velocity on leaving the tube was very low, but increased to around 1,250 feet per second (380 m/s) at 30 feet (9.1 m). The result is a very lightweight weapon with excellent ballistics.

Long out of production, today they are a coveted collector's item with prices for even the most common model ranging above $1,000. They are, however, rarely fired; ammunition, when available at all, can cost over $100 per round.

The inherent difference between a conventional firearm and a rocket is that the projectile of a conventional firearm builds up to its maximum speed in the barrel of the firearm, then slows down over its trajectory; the rocket continues to accelerate as long as the fuel burns, then continues its flight like an un-powered bullet. A bullet has maximum kinetic energy at point-blank range; a rocket has maximum kinetic energy immediately after its fuel is expended.

The rocket leaves the barrel with low energy, and accelerates until the fuel is exhausted at about 60 feet (18 metres), at which point the rocket has a velocity of about 1250 feet per second (FPS), slightly greater than Mach one, with about 50% more energy than the common .45 ACP round.