Kriss TDI Vector SDP Gen2 — .45 ACP, 5.5in Threaded
About this product
What is the Kriss TDI Vector SDP Gen2? The Kriss TDI Vector SDP Gen2 is a purpose-built 5.5-inch threaded barrel pistol chambered in .45 ACP that utilizes the proprietary KRISS Super V recoil mitigation system to dramatically reduce muzzle rise and improve follow-up shot speed. It features full-length MIL-STD 1913 Picatinny rails, ambidextrous controls, and compatibility with standard Glock 21 magazines. This platform is engineered for shooters who demand mechanical precision and suppressor readiness in a compact, legally compliant pistol configuration.
What is the Kriss TDI Vector SDP Gen2 used for?
This pistol is designed for close-quarters defensive applications and suppressor-equipped range use where controlled .45 ACP recoil and rapid target reacquisition are critical. The 5.5-inch threaded barrel provides optimal ballistics for the .45 ACP round while maintaining a compact 16.75-inch overall length that avoids NFA SBR classification when configured as a pistol. Its accessory rails support white lights and laser modules essential for low-light scenarios.
How does the Kriss TDI Vector SDP Gen2 compare to the B&T APC45 Pro?
The Vector SDP Gen2 delivers superior recoil mitigation through its unique Super V system, reducing perceived recoil by approximately 40% compared to the straight-blowback B&T APC45 Pro. However, the B&T platform offers more robust aftermarket support and a fully ambidextrous bolt release that the Vector lacks. For shooters prioritizing flat shooting characteristics over modularity, the Vector represents the better value at nearly $800 less than the APC45 Pro.
What does it weigh and what are the dimensions?
The Vector SDP Gen2 weighs 5.9 pounds unloaded and measures 16.75 inches in overall length with a 5.5-inch cold hammer-forged barrel. The width across the ambidextrous safety lever is 2.25 inches, while the height from rail to magazine baseplate measures 8.75 inches with a standard 13-round Glock 21 magazine inserted. These dimensions make it substantially bulkier than traditional service pistols like the the Stevens 334 Rifle | .308 Win, 20in Matte Black Synthetic but more maneuverable than most carbines.
Who is this NOT for?
This pistol is not ideal for concealed carry due to its 5.9-pound weight and 16.75-inch length, which exceeds practical IWB dimensions. Shooters seeking a traditional pistol manual of arms may find the forward-balanced weight distribution and unconventional trigger linkage disorienting. Those requiring high-capacity magazines should note that .45 ACP Glock magazines max out at 13 rounds, unlike the 30-round options available for our Stevens 555 Sporting O/U 12 Gauge 30in 3in Chamber.
What's in the box?
The factory package includes one 13-round Glock 21 magazine, a polymer hard case with foam insert, a cable lock, and owner's manual with compliance warnings. Notably absent are backup iron sights—the low-profile flip-ups are pre-installed but non-removable without tools. The threaded barrel comes with a ½x28 thread protector, though you'll need to source your own muzzle device or suppressor mounting system separately.
Is the Kriss TDI Vector SDP Gen2 worth it at $1269.99?
At $1269.99, this represents fair value for shooters specifically seeking the Super V system's recoil reduction in a commercially available .45 ACP platform. The machining quality exceeds most AR-pattern pistols in this price range, and the included features justify the premium over standard handguns. However, budget-conscious buyers might prefer a more conventional pistol and invest the savings in ammunition and training.
Specs at a glance
Video review
Pros & cons
What works
- Super V system reduces .45 ACP recoil by 40% versus straight-blowback designs
- 5.5-inch cold hammer-forged barrel maintains 950 fps muzzle velocity with 230gr FMJ
- Full-length Picatinny rails support optics and accessories without adapter plates
- Ambidextrous safety enables left or right-handed operation equally
Trade-offs
- 5.9-pound weight exceeds most service pistols by 2+ pounds—not suitable for carry
- Non-removable flip-up sights require tools for replacement—limits optic co-witness options
- Trigger reset measures 0.3 inches—longer than combat-tuned 1911 platforms
- Proprietary recoil system complicates field stripping compared to GLOCK designs
Expert review
Key attributes
| upc | 810237023051 |
| manufacturer | Kriss TDI |
| manufacturer part number | KV45PFD20 |
| action | Semi-Auto |
| atf type | Pistol |
| barrel length | 5.50" |
| caliber/gauge | .45 ACP |
| capacity | 30 + 1 |
| color | Flat Dark Earth |
| length | 31.5 |
| model | Vector SDP |
| number of magazines | 1 |
| package height | 4.0 |
| package width | 12.0 |
| product type | Pistol |
| safety | Ambidextrous |
| shipping weight | 10.95 |
| sights | Flip Up Front & Rear |
| sights type | FLIP UP SIGHTS |
| state restriction (ca) | NO DIRECT SHIP TO CALIFORNIA |
| state restriction (il) | NO SALE TO ILLINOIS PICA |
| state restriction (or) | NO SALE TO OREGON |
| state restriction (ri) | NO DIRECT SHIP TO RHODE ISLAND |
| state restriction (wa) | NO DIRECT SHIP TO WASHINGTON |
| units per box | 1 |
Frequently asked questions
- Is it compatible with Glock 21 magazines?
- Yes, it accepts all standard Glock 21 magazines including the 13-round factory mags and aftermarket extended versions. The magazine release is identical to Gen 3-4 Glock pistols for muscle memory compatibility.
- Does the threaded barrel accept suppressors?
- The 5.5-inch barrel features ½x28 threads compatible with most .45 caliber suppressors including SilencerCo Octane 45 and Dead Air Ghost-M. Thread engagement is 0.6 inches deep—verify suppressor mounting system requirements before purchase.
- How long does shipping take to Montana?
- FFL shipments to Montana typically take 3-5 business days via UPS Ground after processing. All firearms require signature confirmation and FFL confirmation—allow 24 hours for compliance verification before shipment.
- Can I return it if it doesn't fit my hand?
- Firearms are final sale per ATF regulations, but we offer a 30-day warranty exchange for mechanical defects. The grip circumference measures 5.9 inches—compare to your current sidearm before purchasing.