The Kross Vertex is a rapid-firing, high-capacity SMG with respectable stopping power. Its blistering rate of fire allows it to dish out massive amounts of damage within a short time frame, making it a solid CQC weapon.
In all, the Vertex works best as an unsilenced (and unmodded) bullet hose, if the player can manage its monstrous ammo consumption rate.
Although the main flashlight has a toggle switch, the laser sight component of the LED Combo is pressure-activated, meaning the laser will stay on as long as the pressure switch is depressed. This switch is not placed where it should be, however (on foregrips, magazine wells, etc...) and is instead ziptied to the main taclight, leaving no plausible mean for the user to toggle it without awkwardly moving their off hand off the weapon and gripping the attachment itself.
Upon release, the default reticle of this sight was a chevron instead of the retail version's red dot. After the release of the Gage Mod Courier DLC, it was reverted to the regular sight's red dot.
It is functionally the same as the standard Military Red Dot Sight, but the sight's casing is tan instead of black with the line "A-10" scrawled on near the adjustment knob. The sticker on the lens cap's interior also says "I <3 Payday" instead of having a picture of an American flag.
This sight was based on the Aimpoint CompM2 optic. While it is portrayed as a high-zoom scope in-game, the CompM2 is actually a reflex sight, meaning it offers no magnification in reality.
The Kross Vertex was based on the Kriss Vector; it gains the look of the Vector CRB variant when fitted with the Precision Barrel. A Kriss Enhanced Stock Adapter is added to the gun when a stock modification is equipped.
Both parts of the in-game name are word plays on the two halves of the weapon's real title.
"Kross" is a play on "Kriss", which stemmed from the term "crisscross".
A "vertex" is where multiple "vectors" meet, from which geometric shapes are defined.
The player character's thumb is placed slightly off the button when pressing the bolt release during a full reload. The actual release is not pressed, but the surface beneath it is.
Interestingly, the unmodded Kross Vertex uses Daniel Defense sights like the Raven instead of the factory flip-ups.
The Kross Vertex is referred to as the "Polygon SMG" by the receiver texture, and as "polymer" in the game files.
No 30-round magazines are officially manufactured for the Vector; the standards for .45 ACP are 10, 13, and 25 while the 9mm Para variant is designed to accept Glock magazines at capacities of 10, 17, 19, and 33 respectively.