Continental Customs KRISS Vector C.A.R.T. V4

The Continental Customs KRISS Vector C.A.R.T. V4 is the value pick in the Vector reset-assist field. C.A.R.T. stands for Cycle-Actuated Reset Trigger: the Super V bolt cycle drives the reset, the trigger stays semi-automatic, and it does not fire on its own. The part is laser cut from 304 stainless steel and deburred, and it drops in as a replacement for a single fire-control lever with no permanent modifications.

The engineering story is what sets the V4 apart at this price. Continental ships the kit with two sears because Vector fire-control tolerances vary unit to unit, so you fit the sear that seats correctly in your gun. The V4 revision trimmed sear mass by roughly 18 percent and reworked the geometry so the sear no longer needs the primary sear spring threaded through it, which simplifies assembly and lightens the reciprocating part. A 3D-printed three-position selector cam is included and adds Safe, Semi, and Brrrt positions, but it is optional; the trigger runs in Safe and Brrrt without it.

Fitment covers Gen2 and Gen3 Vectors across all centerfire chamberings: 9mm, .40 S&W, .45 ACP, and 10mm. The manufacturer part number is CCKVCART. As with every reset-assist device, legality is state-specific and evolving, so confirm current federal, state, and local law before ordering.