NRA Gun of the Week: Standard Mfg. S333 Thunderstruck

by
posted on October 30, 2020
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

Argentinian Auction Piece
Argentinian Auction Piece

Rifleman Q&A: Argentinian Auction Piece

"I purchased this .22-cal., six-shot, double-action revolver with a very good bore at auction. The barrel is 1.5" long, octagonal and engraved. Can you tell me more about it?"

The Rifleman Report: Magnificent Milestones

The last major milestone that I remember marking our nation’s founding, the 1976 bicentennial, occurred when I was a high schooler, a year before I enlisted in a nearby military academy’s Junior ROTC program.

 

NRA Partners With Specialists To Enhance Hearing Health

Start Hearing and SoundGear have partnered with the NRA to promote hearing health, safety and protection among members.

Bill Bachenberg Elected NRA President, Doug Hamlin Unanimously Reelected as NRA Executive Vice President & CEO

Today, the Board of Directors of the National Rifle Association of America (NRA), elected Bill Bachenberg of Pennsylvania as President of the NRA and Doug Hamlin as NRA Executive Vice President & CEO.

Review: Garmin Xero C1 Pro Chronograph

Garmin is a longtime provider of useful electronics for outdoor enthusiasts, including handheld GPS units, archery optics and smartwatches. Near the end of 2023, the company expanded its offerings in a fresh direction by offering its very first chronograph, dubbed the Xero C1 Pro.

The Armed Citizen® April 28, 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.

Interests



Get the best of American Rifleman delivered to your inbox.