The Standard Manufacturing Thunderstruck Gen III is a double-barrel .22 WMR DAO revolver with an 8-round capacity and a 2.25-inch barrel. Overall length is 7 inches and it weighs 1.1 lbs. The aluminum frame has a black hardcoat anodized finish and the cylinder is also black. The finger-grooved polymer grip is designed to help manage recoil from the .22 WMR cartridge at this weight. 
 

Key Specifications 

• Model Name: Thunderstruck Gen III 
• Caliber: .22 WMR 
• Action: Double Action Only (DAO) 
• Capacity: 8 rounds 
• Barrel Length: 2.25 inches 
• Overall Length: 7 inches 
• Weight: 1.1 lbs (18 oz) 
• Grip Material: Black Finger Grooved Polymer 
• Trigger Type: Standard Trigger 
• Finish: Black Barrel and Cylinder 
   

Detailed Features 

 
The double-barrel action fires two shots in quick succession before the cylinder advances, which gives the Thunderstruck a higher effective rate of fire than a conventional revolver at the same capacity. The lightweight aluminum frame keeps the gun easy to carry. The hardcoat anodized finish resists scratches and wear, and the finger-grooved grip helps position the hand consistently for recoil control.

Feedback on the Thunderstruck Gen III centers on its unusual design and how well it delivers on .22 WMR in a compact package.

Accuracy and reliability with .22 WMR get consistent positive marks -- owners report clean cycling and acceptable accuracy for both target shooting and small game use. The lightweight at 1.1 lbs is frequently praised for carry convenience. The double-barrel action is the most discussed feature; shooters who use it for range plinking appreciate the fast double-shot capability. Recoil with .22 WMR in this package is considered very manageable, which makes it accessible for newer shooters. Value relative to price is generally considered favorable.

The main area of discussion is fit and application: most users see this as a specialized range, plinking, or small-game gun rather than a primary self-defense option, largely due to the caliber. The DAO trigger gets occasional criticism for feel, though most owners find it functional for the gun's intended use.