The Vector is a major re-think and redesign of the way in which semi-and automatic weapon operating systems should work—a design challenge that hasn’t been successfully addressed since the invention of the Maxim machine gun more than 120 years ago.
Any caliber weapon, firing a cartridge ranging from .223 – 50 bmg or larger, generates tremendous levels of recoil to cycle the weapon which is felt by the operator. This felt recoil and increased muzzle climb will drastically reduce the accuracy of the operator and the time needed to re-acquire the target. The KRISS system was designed to address and solve these issues and work with the operator for a more desirable effect.

The KRISS Vector overcomes the effects of the felt recoil by re-directing the blowback energy down and away from the operator. Traditional firearms utilize a “straight-line” design that drives the action of the firearm directly toward the operator creating a substantial increase in the felt recoil and movement.

The Vector reduces the felt recoil and muzzle climb through a counter-balancing mass in the form of the bolt and slider mechanism that absorbs the shock and redirects the forces away from the operator. This action will increase the operator’s ability to consistently put rounds on target faster and more accurately whether it’s semi-auto, multi-round burst or a full automatic rate of fire.

The KRISS Vector is the only weapon operating system in the world that actually helps the operator put more rounds on-target, more of the time.

Traditional weapons operating systems actually work against the operator; these systems create recoil and barrel elevation forces that require the operator to constantly recapture his sight picture.

Instead, by re-vectoring these forces, the patented Vector system works with the shooter by helping keep the muzzle exactly where the operator points it. No recapturing or reacquiring of sight picture is needed.

KRISS built the Vector family of firearms in the very robust .45 ACP round in order to provide an optimal level stopping power while minimizing over-penetration. At the present time, KRISS is developing a whole new array of weapon platforms in various calibers.

The KRISS Vector SMG .45ACP submachine gun is only available to qualified LE/MIL units here in the US and overseas. Please contact us for more information.
The semi-auto KRISS Vector CRB, SDP, and SBR models are available through our dealer network. You can search our dealer directory on our website to locate a KRISS dealer in your area. If you can't find a KRISS dealer nearby, simply reach out to your local FFL dealer and ask them to contact us. We will work with them to ensure they have access to our firearms and accessories.

Yes, currently KRISS USA produces models that are compliant in all 50 states to include Massachusetts, New York, Connecticut, New Jersey, and California. The KRISS Vector CRB and SBR are also available in Canada.

KRISS USA offers a conversion service to convert your CRB/SDP to an SBR. You can ship the firearm to us and we will replace the 16” barrel of a CRB with a 5.5” threaded barrel assembly or remove the pistol end attachment of the SDP and replace it with a folding stock. Since the SBR is considered a class 3/NFA weapon, we will need to complete the appropriate paperwork with the ATF prior to transferring it to your class 3 FFL/SOT dealer. There is a charge for this service, please contact us for a quote.

For SDP to SBR conversions, we recommend you send the firearm to us to do the conversion. The conversion consists of removing the butted end piece and adding a folding stock. Similar to the CRB to SBR conversion, we will complete the appropriate paperwork with the ATF to register the class 3/NFA SBR. Removing the butted end piece from the SDP is more complicated than it seems. Please note, any attempts to modify our firearms will result in a voided warranty. As such, we don't recommend individual users attempt to remove the butted end piece themselves as this will void the warranty. There is a charge for this service.

For more information on SBR conversions, please contact us.