NRA Gun of the Week: Standard Mfg. S333 Thunderstruck

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



A man aims a rifle equipped with a Silencer Central Banish 46 suppressor.
A man aims a rifle equipped with a Silencer Central Banish 46 suppressor.

Rifleman Review: Silencer Central Banish 46 Suppressor

One of the most versatile options in Silencer Central's own line of suppressors is the Banish 46, rated for use on rifles chambered for .458 Win. Mag. or less.

New For 2024: Rock Island Armory 5.0E

Rock Island Armory's 5.0E is an "enhanced" version of its original 5.0 handgun introduced at the 2023 SHOT Show.

2024 Accessory Of The Year: MDT .308/6.5 Creedmoor Polymer AICS 3-Round Magazine

The AICS-pattern detachable box magazine has become an industry standard, but MDT upped the ante by creating a flush-fit version that makes AICS-compatible rifles even more sleek and trim.

Legendary Riflemaker Melvin Forbes Passes Away

Melvin Forbes, founder of New Ultra Light Arms and a pioneer in the building of light rifles, passed away at his Granville, W.V., home on June 5, 2024. He was 77 years old.

Review: Leupold BX-4 Range HD TBR/W 10X 42 mm Binocular

It’s best to use the KISS approach and minimize the equipment needed to put your bullet precisely where you need it. Leupold's BX-4 Range HD TBR/W binocular helps in that process while cutting down on your gear load.

A 30-Yard Zero For Precision .22s

If you’re like most people, your .22 Long Rifle zero is probably 25 yards, or maybe 50 yards. But have you ever tried something in between?


Get the best of American Rifleman delivered to your inbox.