Check out this tracked, vintage 1950s six-shooter

When you think of six-shooters, the classic .38 Smith & Wesson Special revolver comes to mind, as made famous by classic cop shows, like Adam-12, Dragnet, and CHiPs, and countless Westerns. But there was one six-shooter that packed a lot more punch than the cowboys' gun of choice.

The six-shooter in question was the M50 Ontos — and it certainly wasn't a revolver. This tracked vehicle packed six M40 106mm recoilless rifles. It was intended to serve a tank-killer for use by light infantry and airborne units when it entered service in 1955, facing off against the then-new Soviet T-55 main battle tank. Like a revolver, it was meant to quickly end a fight.

Six M40 106mm recoilless rifles gave the Ontos one heck of a first salvo,

(US Army)

The Ontos had a crew of three — a driver, gunner, and commander. It held a total of 24 rounds, 6 loaded and 18 in reserve, for its massive guns. The vehicle ended up being used primarily by the Marine Corps — not the Army airborne units for which it was originally intended.

This system proved very potent in Vietnam. Its six recoilless rifles could do a lot to knock infantry back — and the North Vietnamese and Viet Cong found that out the hard way. The Ontos also carried a pair of .50-caliber spotting rifles to improve accuracy and had a World War II-era .30-caliber M1919 machine gun attached (the same used by grunts in WWII).

A Marine escapes the cramped confines of his M50 Ontos to catch a break.

(USMC)

The Ontos was retired in 1970, largely because while it looked mean as hell and packed a punch, it had a few severe drawbacks. One of the biggest being that the crew had to exit the vehicle in order to reload the big guns — which sounds like a quick way to shorten your life expectancy. Then again, if you've tried to reload a revolver, you know that process can take a while. In that sense, the Ontos was very much a true six-shooter.

Learn more about this unique powerhouse in the video below.