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There's nothing else on the gun counter quite like the S333 Thunderstruck. Standard Manufacturing built this eight-shot .22 WMR revolver around a double barrel setup that fires two rounds simultaneously with each pull of the trigger. Four pulls empties the whole cylinder, and the company rates that at about three seconds. The idea is simple: put more lead on target per trigger pull while keeping recoil light enough that just about anyone can manage it.
This third generation brings some meaningful upgrades over earlier versions. The 2.25 inch barrels are now individually machined and threaded into a solid barrel nut for a secure, consistent fit, and the machined aluminum shroud keeps everything protected and in position. The longer barrels give the powder a more complete burn and better bullet stability than the stubby tubes on the original. Gen III also gets dovetailed day/night glow front and rear sights, an improved grip, and a two-stage set style trigger. You can take up the first stage to a stop, then break the shot with a lighter second stage, or safely let it back down if you decide not to fire.
The two-finger trigger is the heart of this design. It takes both your index and middle finger with a full, intentional pull to fire, backed up by an articulated trigger safety and a transfer bar that keeps the firing pins blocked until the trigger completes its travel. Pair that with a 7075 aluminum upper frame in a black hardcoat anodized finish, a high strength steel cylinder, and finger-grooved polymer grips, and you get a stout little gun that still comes in at a pocketable 18 ounces.
Standard Manufacturing test fires and regulates every S333 with CCI Maxi Mag 40 grain, Maxi Mag 40 grain HP, and PMC Predator 40 grain loads, so stick with those for best results. Some folks like loading a mix of standard rounds and birdshot so each pull sends a bullet and a spread of shot at the same time. Either way, this wheelgun is a genuine conversation piece that backs up its looks with a clever, deliberate design.
The Thunderstruck uses two stacked barrels and a cylinder that lines up two chambers at a time. Each full pull of the trigger drops both hammers simultaneously, sending two .22 WMR rounds downrange together. With an eight-round cylinder, that gives you four trigger pulls per loading.
Standard Manufacturing test fires and regulates every S333 with CCI Maxi Mag 40 grain, CCI Maxi Mag 40 grain HP, and PMC Predator 40 grain loads. Sticking with those loads gives you the best reliability and point of impact. Some owners also like mixing standard rounds with birdshot so each pull delivers a bullet and a spread of shot together.
Gen III moves to longer 2.25 inch barrels that are individually machined and threaded into a solid barrel nut, which improves powder burn and bullet stability. It also adds dovetailed day/night glow sights, an updated grip, and a two-stage set style trigger that can be safely decocked from its first stage. Earlier generations used shorter one-piece barrel blocks and integrated sights.
The wide trigger is designed to be pulled with both your index and middle finger, which makes firing a very deliberate act. It's paired with an articulated trigger safety and a transfer bar that blocks the firing pins until the trigger travels its full length. The result is a gun that resists unintentional discharge from drops or snags.
| UPC | 810115913009 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | S333-GEN-III |
| Action | |
| Barrel Finish | Black |
| Barrel Length | 2.25" |
| Caliber/Gauge | .22 WMR |
| Capacity | 8 |
| Shipping Weight | 1.8 |
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