- California versions
- 2
- Caliber
- .22 WMR
- MSRP
- $399
- Barrel lengths
- 1.25", 2.25"
Is the Standard Manufacturing S333 Thunderstruck legal in California?
Yes. 2 versions of the Standard Manufacturing S333 Thunderstruck are on the California DOJ Roster of Handguns Certified for Sale as of October 27, 2026, so California dealers can sell those exact versions new. Only the specific versions listed on this page are certified: a different finish, barrel length or caliber that is not listed is off-roster and can only be bought through a private party transfer at a licensed dealer.
See all 2 California versions ↓ Shop the Standard Manufacturing S333 Thunderstruck on Guns.com → Compare models →
Standard Manufacturing S333 Thunderstruck versions on the California roster
| Photo | Version | Caliber | Barrel | Capacity | MSRP | Guns.com |
|---|---|---|---|---|---|---|
 |
S333 | .22 WMR | 1.25" | 6 | $399 | Search → |
|
S333 THUNDERSTRUCK GEN III | .22 WMR | 2.25" | 9 | — | Search → |
Tap a version for full specs, AB 1127 status and where to buy it in California. Guns.com ships to your local California FFL; prices change often, so confirm on Guns.com. Guns.com links are affiliate links that help support this site.
About the Standard Manufacturing S333 Thunderstruck
The S333 Thunderstruck is made by Standard Manufacturing Company, LLC, based in New Britain, Connecticut. It is a double-action-only, double-barreled derringer-style handgun chambered in .22 WMR that fires two rounds simultaneously with a single trigger pull. It is designed as a compact, close-range personal defense option.
How the California versions differ
- The standard S333 has a 1.25" barrel, while the Gen III has a longer 2.25" barrel, giving the Gen III a slight advantage in muzzle velocity and sight radius.
- The Gen III's longer barrel also results in a modestly larger overall length and weight compared to the base model.
- Both versions are chambered identically in .22 WMR and share the same double-barrel, double-action-only operating concept.
- The base S333 carries an MSRP of $399; no MSRP is listed in the roster data for the Gen III version.
- Beyond barrel length, no differences in finish, grips, or sights are specified in the California DOJ roster listing for these two versions.
Who it suits
The S333 Thunderstruck is best suited for shooters seeking an extremely compact backup or deep-concealment personal defense handgun, and may also appeal to those who want an unconventional, lightweight option for close-range protection.