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

Keltec Sub Sdp 1
Keltec Sub Sdp 1

The "Nub Sub:" KelTec's Ultra-Compact SUB-SDP

KelTec is expanding its SUB2000 line yet again with the SUB-SDP, a foldable, braced pistol that KelTec folks colloquially refer to as the "NUB SUB."

Gun of the Week: EAA Girsan Witness2311 CMXX

One of the latest options in EAA's line of 2011-style handguns is the Witness2311 CMXX, which incorporates a large, single-port compensator at the muzzle end.

The Armed Citizen® July 24, 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.

Review: Freedom Ordnance FM-9D

New small arms with groundbreaking designs are rare in an industry where new products tend to be evolutionary rather than revolutionary. Fortunately, Freedom Ordnance marches to the beat of a different drum and invested its creative energy into developing the unique, innovative FM-9D. 

Number of Retail FFLs Dwindling

The number of retail outlets with an FFL Type 01 license to sell firearms has declined by more than 13 percent in just the last five years.

Ammunition Depot and NRA Partner to Expand Support for Second Amendment Litigation

The NRA has invested more than $3 million in California Second Amendment litigation since 2021 and has provided support for Rhode v. Bonta; Ammunition Depot is launching a checkout donation option to help fund ongoing legal efforts.

Interests



Get the best of American Rifleman delivered to your inbox.