Kriss/TDI Vector Carbine

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  • Kriss/TDI Vector Carbine

    The KRISS USA (formerly known as TDI, Transformational Defense Industries) Vector SMG was originally developed by French engineer Renaud Kerbrat as a submachinegun with the stated goal of largely eliminating felt recoil. It does this by lowering the bore axis to be more in line with the hand and arm, by using a low pressure cartridge, and by using recoil redirection. The Super V recoil system is an articulated bolt and recoil assembly that directs the short recoil impulse downwards rather than straight back. This movement of mass and energy vastly reduces muzzle flip at the expense of being a bit bulky. Kriss is the USA distributor and manufacturer while TDI supplied marketing and design input.

    My Vector Carbine is a relatively early commercial version, and so is largely identical to the machinegun version - needing only the trigger pack for full auto. Subsequent versions are not compatible with the full auto trigger pack at all and require bolt replacement as well as moving the trigger pack forward a bit to properly engage the sear disconnect. It is available in black, coyote brown, and very early versions were two tone with a stainless barrel.

    DSCF0271 by chazbotic, on Flickr

    DSCF0272 by chazbotic, on Flickr

    Mine is a semi-automatic version of the SMG, and features a 16" barrel with a barrel shroud. I plan on shortening the barrel to 5.5" and threading it in the future.

    DSCF0273 by chazbotic, on Flickr

    One thing that's neat is that it accepts standard Glock 21 magazines. Kriss also contracted Magpul for certain features, like the MOE style grip and the manufacturing of the 30 round magazine extension. The extension replaces the floorplate of the Glock magazine and includes a new floorplate and spring with the extended body. And yes, the 30 round magazine will also fit in a Glock 21, which looks a bit amusing.

    DSCF0283 by chazbotic, on Flickr

    The stock is folding, and the crosspins used throughout the carbine are the same design used by H&K (the "large" stock pins from the G3 rifles). Just like the folding stocks on the G36, a large spring-loaded push button releases hold of an integrated engagement surface to release the stock.

    DSCF0275 by chazbotic, on Flickr

    The stock is adjustable for length of pull (although not much adjustment) using set screws to retain position.

    DSCF0274 by chazbotic, on Flickr

    The sights are included and are folding. The early commercial versions were made by Midwest Industries, which originally came with mine, but because of some scratching issues, I swapped mine for the 2nd gen Troy manufactured sights. They are Kriss branded, and are identical to AR-15 sights, although the front sight post is shorter by 1/16".

    DSCF0277 by chazbotic, on Flickr

    You can see here the spring loaded charging handle, magazine release, and bolt hold open. The charging handle is functionally identical to an H&K charging handle in that it folds flat when not in use and is used to cam the bolt rearward open opening and is pulled straight back. The magazine release is a Glock 21 release with a slightly larger button screwed into place.

    DSCF0278 by chazbotic, on Flickr

    Take-down of the rifle for cleaning and inspection is down by removing these cross pins and separating the upper and lower receivers.

    DSCF0279 by chazbotic, on Flickr

    DSCF0280 by chazbotic, on Flickr

    Here you can see the trigger pack. Upside down from a more conventional design, but recognizable with all the gubbins.

    DSCF0282 by chazbotic, on Flickr

    Here's the meat of the system: the lower. It's a polymer jacket around a steel receiver frame. The barrel is pressed into a pinned and welded trunnion towards the front, similar to an AK. I use a bit of wood here to hold the bolt about halfway back so you can see the downwards movement of the bolt and recoil mass along the track in the receiver. Note the green plastic buffer. This is a wearing part and must be replaced on occasion.

    DSCF0284 by chazbotic, on Flickr

    DSCF0285 by chazbotic, on Flickr

    Removing the fourth cross pin will allow the Super V recoil system to be removed along with the bolt. Note the green plastic buffer. This is a wearing part and must be replaced on occasion.

    DSCF0286 by chazbotic, on Flickr

    DSCF0288 by chazbotic, on Flickr

    DSCF0289 by chazbotic, on Flickr

    Note the two tracks: one for the lugs on the bolt, and the other for the lugged recoil mass.

    DSCF0287 by chazbotic, on Flickr

    After that, you can use the included Otis cleaning kit and brushes to clean your weapon for storage or after use. The rifle itself is rather heavy and balances a bit forward of the magazine. The recoil reduction system is excellent and does a spectacular job at nearly eliminating muzzle flip and felt recoil. It's very easy to sling out 200gr +P bullets out to the 100 yard line and maintain a pattern measuring less than an inch across when using a bench. Off hand, you would have to intentionally try not to hit the same spot at closer targets. I usually use the included iron sights, but the Vector is designed with the Eotech holographic sight in mind and the long top rail and bottom rail (with optional side rails) allow all kinds of accessory mounting. A Surefire E series flashlight has a dedicated space in the upper receiver and slots allow the pressure switch to be threaded through and places in the depressions in the lower for easy cable management and to save rail space. I elect to use a CAA vertical grip for comfort reasons.

    About the only real negative side is that i've notice significant flex between the upper and lower plastic components to the point where they are slightly warped - purely cosmetic, but annoying. Additionally the original Midwest Industries sights would not fold flat and kept scraping at the finish on the rail when folded. Lastly it is a blowback firearm, so it should digest just about anything - but realistically it prefers slightly hotter loads rather than mediocre target loads because of the high recoil mass and the Super V retarding the travel of the bolt to the point that weak loads that work in other blow back carbines I have will not reliably cycle in the Vector.

    DSCF0290 by chazbotic, on Flickr

    All in all a neat carbine.

  • #2
    That is fine looking gun you have there, something we will never be allowed own in this country.

    Thank you for sharing


    • #3
      ************************************************** ******************

      Now I'm very sad after seeing these pics.

      It like seeing some lollies you can't have.


      ************************************************** ********************


      • #4
        thanks for sharing.

        always love a bit of gun porn to start the week


        • #5
          Actually compared to other Semi-Autos it looks UGLY!
          [ul][li]Member:- SFP, SUQ, SSAA [/li]
          [li]Rimfire:- Savage MK II, FN 1926 , Liege 22Long, Win '04 , Lithgow 1B[/li]
          [li]Centrefire: - Mossberg 30-06 Sprg,270 win,Marlin 22-250[/li]
          [li]Handgun:- Ruger .357[/li]
          [li]Wishlist:- .22 Charger, 338WM[/li][/ul]


          • Tornado-Technologies
            Tornado-Technologies commented
            Editing a comment
            They are a cool looking weapon, but there was a number of things I just wasn't impressed with (sorry Chazbot, hope you're not offended).

            The claimed recoil and muzzle rise advantages simply are completely exaggerated. The SMG version has way too high a cyclic rate on automatic and accuracy suffers. My M3A1 Grease gun is far more accurate on auto!
            Then there's the cocking handle issue. The last few I've handled including one that came direct from Vector a week ago, had some sort of cocking handle issue. You had to pull it with your handle close into the weapon else it could not be retracted. WTF?

            Here's their video explanation:

            Dunno about you, but for a weapon that expensive, I want to be able to pull the charging handle any darn way I please!

        • #6
          Would love to get the chance to play around with one of these

          Thanks for sharing


          • #7
            Nice bit of kit Chazbot and thanks for the detailed review again. I look forward to the next one.


            • #8
              Certainly a cool firearm, just so happens I was watching the new total recall when I saw this thread
              “The only thing necessary for the triumph of evil, is for good men to do nothing” - Edmund Burke


              • Greenwich-biker
                Greenwich-biker commented
                Editing a comment
                Another cool review - pls keep 'em coming, Chazbot