The Standard Manufacturing S333 Thunderstruck fires two rounds of .22 Win Mag per trigger pull from a double-barrel, double-action configuration. The 8-round cylinder means four trigger pulls before a reload. At 18 oz and 1.5-inch barrels, it's compact. 
 

Key Specifications 

• Manufacturer: Standard Manufacturing 
• Model: S333 Thunderstruck 
• Caliber: .22 Win Mag 
• Capacity: 8 Rounds 
• Barrel Length: 1.5 inches 
• Weight: 18 oz 
• Finish Color: Red 
• Condition: New in Box 
   

Detailed Features 

The double-barrel, double-action system discharges two rounds simultaneously per trigger pull. The cylinder is steel; the frame is 7075 aircraft-grade aluminum, which keeps weight down while maintaining strength. An integral articulated trigger safety prevents the firing pins from reaching the hammers unless the trigger is fully depressed. The polymer grip helps absorb some of the simultaneous two-round recoil impulse. 
 
The .22 Win Mag is a more capable rimfire cartridge than .22 LR, with higher velocity and more consistent terminal performance, though it still sits below centerfire defensive calibers. The short 1.5-inch barrels keep velocity modest but make the package genuinely pocketable.

The S333 Thunderstruck gets attention because the double-barrel concept is genuinely unusual -- firing two rounds per trigger pull is something most shooters haven't experienced, and that novelty drives a lot of the discussion. Compact size and light weight for concealed carry or backup use are frequently mentioned positives.

Caliber opinion splits predictably: .22 Win Mag is seen as manageable and accessible by newer or recoil-sensitive shooters, while those prioritizing defensive stopping power prefer larger centerfire options. Performance reports vary -- some owners find it accurate and reliable during range sessions; others have reported misfires and feeding issues. The red finish draws positive aesthetic comments but also reinforces the impression that it leans toward novelty or recreational use rather than primary defensive duty. Pricing discussion goes both ways depending on how much weight someone puts on the unique design versus practical performance metrics.