
Availability: In Stock
Current Stock: Out of stock
The Kriss Vector SDP Gen 3 in .45 ACP is a purpose-built defensive carbine that combines the stopping power of a full-size pistol round with the handling and control of a compact long gun. At just 5.6 lbs and collapsing to 15.35 inches, the SDP occupies the sweet spot between portability and shootability — ideal for home defense, vehicle storage, or close-quarters work where you need serious power without the bulk of a traditional rifle. If you've built an AR platform or run Glock mags, the Vector SDP's familiar controls and mag compatibility mean minimal learning curve.
The Gen 3 redesign focuses on modularity and user customization. The interchangeable AR15/M16-pattern pistol grip lets you fine-tune ergonomics to your hand, while the ambidextrous mag release and short-throw safety work equally well for lefties and righties. The skeletonized trigger has a short 0.7mm pre-travel, promoting clean, predictable breaks during defensive drills. Full-length Picatinny rails on top and a rear stock-mount rail mean you can mount optics, lights, and braces without compromise — build it the way your mission demands.
The Vector SDP runs on a closed-bolt delayed blowback system, feeding from standard full-size Glock magazines (one 30-round mag included). Its 5.5-inch 4140 chrome-moly barrel wears a durable black nitride finish and is threaded .578x28 RH for suppressor mounting. Field-stripping is refreshingly simple: the 4-pin tool-less disassembly gets you down to major components in seconds. Whether you're setting up a dedicated .45 ACP defensive platform or adding a compact, intuitive option to your safe, the Vector SDP Gen 3 rewards users who value control, modularity, and genuine stopping power in a surprisingly compact package.
| Caliber | .45 ACP |
| Action | Semi-Automatic |
| Operating System | Closed Bolt Delayed Blowback |
| Barrel Length | 5.5 inches (139.7 mm) |
| Overall Length (Collapsed) | 15.35 inches (390 mm) |
| Weight | 5.6 lbs (2.5 kg) |
| Barrel Material | 4140 Chrome Moly |
| Barrel Finish | Black Nitride (QPQ) |
| Barrel Threading | .578×28 RH |
| Trigger Type | Pivoting Single Stage; 0.7 mm Pre-Travel |
| Magazine(s) | 1×30-Round (Full-Size Glock Compatible) |
| Color | Black |
| Model | Vector SDP Gen 3 |
Yes. The SDP is fed with full-size Glock-pattern magazines, so if you already run Glock mags in your other firearms, you can use the same ammunition source here. One 30-round magazine is included with the carbine.
Yes. The barrel is threaded .578×28 RH, so you can attach a .45 ACP suppressor with the appropriate adapter or direct-thread mount.
The Vector SDP features an interchangeable AR15/M16-pattern pistol grip, so standard AR-platform grips will work. This lets you swap grips to match your hand size or ergonomic preference.
The Kriss Vector SDP Gen 3 comes with one 30-round magazine. You'll need to source a brace, stock, or other accessories separately to complete your build.


SKU: 145479308 • Width: 12in • Height: 3.95in • Depth: 31.45in • Weight: 11oz





Availability: In Stock
Current Stock: Out of stock
The Kriss Vector SDP Gen 3 in .45 ACP is a purpose-built defensive carbine that combines the stopping power of a full-size pistol round with the handling and control of a compact long gun. At just 5.6 lbs and collapsing to 15.35 inches, the SDP occupies the sweet spot between portability and shootability — ideal for home defense, vehicle storage, or close-quarters work where you need serious power without the bulk of a traditional rifle. If you've built an AR platform or run Glock mags, the Vector SDP's familiar controls and mag compatibility mean minimal learning curve.
The Gen 3 redesign focuses on modularity and user customization. The interchangeable AR15/M16-pattern pistol grip lets you fine-tune ergonomics to your hand, while the ambidextrous mag release and short-throw safety work equally well for lefties and righties. The skeletonized trigger has a short 0.7mm pre-travel, promoting clean, predictable breaks during defensive drills. Full-length Picatinny rails on top and a rear stock-mount rail mean you can mount optics, lights, and braces without compromise — build it the way your mission demands.
The Vector SDP runs on a closed-bolt delayed blowback system, feeding from standard full-size Glock magazines (one 30-round mag included). Its 5.5-inch 4140 chrome-moly barrel wears a durable black nitride finish and is threaded .578x28 RH for suppressor mounting. Field-stripping is refreshingly simple: the 4-pin tool-less disassembly gets you down to major components in seconds. Whether you're setting up a dedicated .45 ACP defensive platform or adding a compact, intuitive option to your safe, the Vector SDP Gen 3 rewards users who value control, modularity, and genuine stopping power in a surprisingly compact package.
| Caliber | .45 ACP |
| Action | Semi-Automatic |
| Operating System | Closed Bolt Delayed Blowback |
| Barrel Length | 5.5 inches (139.7 mm) |
| Overall Length (Collapsed) | 15.35 inches (390 mm) |
| Weight | 5.6 lbs (2.5 kg) |
| Barrel Material | 4140 Chrome Moly |
| Barrel Finish | Black Nitride (QPQ) |
| Barrel Threading | .578×28 RH |
| Trigger Type | Pivoting Single Stage; 0.7 mm Pre-Travel |
| Magazine(s) | 1×30-Round (Full-Size Glock Compatible) |
| Color | Black |
| Model | Vector SDP Gen 3 |
Yes. The SDP is fed with full-size Glock-pattern magazines, so if you already run Glock mags in your other firearms, you can use the same ammunition source here. One 30-round magazine is included with the carbine.
Yes. The barrel is threaded .578×28 RH, so you can attach a .45 ACP suppressor with the appropriate adapter or direct-thread mount.
The Vector SDP features an interchangeable AR15/M16-pattern pistol grip, so standard AR-platform grips will work. This lets you swap grips to match your hand size or ergonomic preference.
The Kriss Vector SDP Gen 3 comes with one 30-round magazine. You'll need to source a brace, stock, or other accessories separately to complete your build.
SKU: 145479308 • Width: 12in • Height: 3.95in • Depth: 31.45in • Weight: 11oz

