Standard Manufacturing reimagined the wheelgun with the production of the S333 Volleyfire “Thunderstruck”, a twin-barreled, 8-round, .22 Magnum revolver.

As you probably guessed from the “Volleyfire” in the name, the unusual handgun fires two rounds with each pull of the trigger. Standard Manufacturing states the S333 will get off all eight rounds with only four pulls of the trigger, in about three seconds. With an emphasis on quick-draw, the unique pistol is double-action only with a concealed hammer.

The S333 was designed as defensive handgun; as such, Standard kept the weight to 18 ounces by using a 7075 aluminum frame wrapped in a polymer grip. The small size jives with a variety of on- and off-body concealed carry positions. An articulated safety is built in to the trigger, and the company assures consumers that it would require a full-pull of the trigger to disengage the transfer bar safety.

You may be wondering if this meets the ATF’s definition of a machine gun because it fires more than one round with each pull of the trigger. Standard assures consumers that it does not, and that the new double-fire handgun is not covered by the National Firearms Act (NFA), instead being listed by the agency as a pistol.

The S333 holds eight rounds of .22 Magnum.
The S333 holds eight rounds of .22 Magnum. mfg photo

Obviously, I’d love to fire this thing. Off the top of my head, I can’t think of another production revolver that fires two rounds at once other than the astronomically expensive double-barrel 1911 from Arsenal Firearms, so there’s a definite cool factor. But I question the real-world applications of such a firearm.

I would assume that two .22 Magnum rounds touching off at the same time would have similar recoil to a .38 Special.

Most .22 WMR rounds are in the neighborhood of 40 grains, while a typical .38 Special slug weighs anywhere from 120 to 160 grains. Even combining the two smaller rounds is only an 80-grain payload, which is anemic in comparison. Maybe the two wound channels created by having two rounds impact at the same time have more stopping power than one larger round?

The company suggests mixing ammo types to increase defensive potential. In a release, Standard proposes, “By combining standard ammunition and birdshot, each pull of the trigger will deliver an incredible combination of firepower and very light recoil.”

The Standard Mfg S333 has a suggested retail price of $369. For more information, visit

Standard Manufacturing S333 Specifications

  • Caliber: .22 Win Mag
  • Capacity: 8
  • Barrel Length: 1.25 inches
  • Barrel Material: Steel
  • Cylinder Material: Steel
  • Grip: Polymer
  • Weight: 18 ounces