NRA Gun of the Week: Standard Mfg. S333 Thunderstruck

by
posted on October 30, 2020
** When you buy products through the links on our site, we may earn a commission that supports NRA's mission to protect, preserve and defend the Second Amendment. **
Standard Mfg. has brought innovative and defense-oriented firearms to market that diverge from its sister company’s well-beaten path. The S333 Thunderstruck revolver is another example of unique design from the Connecticut-based manufacturer. The S333 is a twin-barreled revolver with capacity for eight rounds of .22 WMR and has an overall weight of 18 ozs.

Double barrel muzzle view revolver

The S333 revolver is designed to provided maximum and controllable firepower in a fairly compact package—the gun utilizes two barrels of which a cylinder presents a cartridge for each. Users are required two fingers for the double-action-only trigger press that ignites two magnum rimfire cartridges. Standard Mfg. provides a passive transfer bar safety mechanism to prevent unintentional discharge.

black revolver trigger and grip white background

A cylinder release is found on the left side of the frame and the cylinder was noted to swing out freely. Topping the eight-shot revolver are a set of aiming reference marks. Our testers found the gun’s grooved polymer stock and frame design to point instinctively on target and recoil was noted to be minimal. Company literature states the barrels are regulated for 40-grain loads from CCI and PMC and that variations in other ammunition can cause problems with accuracy.

black revolver in hand

Watch our NRA Gun of the Week video above to learn more about the Standard Manufacturing S333 Thunderstruck revolver.

Standard Manufacturing S333 Thunderstruck Specifications
Manufacturer: Standard Mfg. Co. LLC.
Action Type: double-action, double-barrel rimfire revolver
Chambering: .22 WMR
Barrels: 1.25” steel
Frame: 7075 aluminum, anodized finish
Sights: fixed, three-red dot, square-note rear, post front
Weight: 18 oz.
MSRP: $429

Further Reading:
Standard Manufacturing STD-15 Model A

Tested: Standard Mfg. 1911 Case Colored #1 Engraved Pistol

Bill Ruger's .22 Pistol

Identifying Mauser Markings

Extras:






Latest

Beretta BRX1
Beretta BRX1

Review: Beretta BRX1: 6.5 mm Creedmoor Straight-Pull Rifle

Introduced overseas in 2021 and brought to our shores in 2024, Beretta’s BRX1 offers a fresh take on the century-old straight-pull rifle concept.

Auto-Ordnance Releases 250th Anniversary Commemorative Carbines

Auto-Ordnance has introduced a special-edition, semi-automatic Thompson M1 carbine customized by Altered Arsenal to commemorate the 250th anniversaries of the United States Navy and Marine Corps.

Benelli Nova 3 Tactical: Innovation Meets Simplicity

Famous for its semi-automatic shotguns, Italian maker Benelli steps up its game in pump-actions—and forecasts more availability of U.S.-market-ready versions in the future.

Marines Turned Arms Inventors: Melvin Johnson & Eugene Stoner

Within the pantheon of U.S. Marine Corps small arms, two rifles are indelibly linked with the Corps’ combat experience in the 20th century, and both were designed by Marines: the Model 1941 Johnson Rifle and the M16.

The Armed Citizen® Nov. 3, 2025

Read today's "The Armed Citizen" entry for real stories of law-abiding citizens, past and present, who used their firearms to save lives.

The Case For Velocity

Although the effects of a bullet's terminal performance had been thoroughly studied by 1955, ammunition pioneer Roy Weatherby sought to prove velocity trumps mass and, as a result, built a reputable business that continues to advance today.

Interests



Get the best of American Rifleman delivered to your inbox.