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

Discontinued Models Walther Ppk F
Discontinued Models Walther Ppk F

Too Late: The Perils Of Waiting To Buy That One Gun

Gunmakers are often quiet when they discontinue a gun model. We’ve all felt the pain of suddenly discovering a firearm we’d love to own that is no longer available.

Preview: DA Targets Half-Size Silhouette Color-Changing Target

Replacing targets, time and time again, can be costly and time-consuming, which is where this U.S.-made product from DA Targets comes into play.

Return Of The Red Label: Ruger's New Red Label III Shotgun

Ruger's Red Label III marks the third generation of Ruger's classic over-under shotgun, which is finally making a reappearance after it was discontinued more than a decade ago.

Preview: GPS Bags Shotgun Shell Tote

Range visits are often more enjoyable with well-organized equipment, which is where GPS Bags comes into play with its Shotgun Shell Tote.

Gun Of The Week: Wilson Combat NULA Model 20

In our latest "Gun Of The Week" segment, we’re taking a closer look at Wilson Combat’s NULA Model 20, a lightweight, bolt-action hunting rifle that incorporates innovations first pioneered by the “rifle wizard of West Virginia."

The Armed Citizen® Jan. 2, 2026

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

Interests



Get the best of American Rifleman delivered to your inbox.