The Vector K10 in Call of Duty Black Ops 2 is very similar to how it was in Call of Duty Modern Warfare 2. Back then it had a high fire rate but low damage with decent accuracy and fairly average recoil. The same can be said about the Vector K10 in Call of Duty Black Ops 2. This guide explains how to use the Vector K10 effectively and what class setup is best for it.
There is a visual version of this guide in a YouTube video at the end of this guide.
When you use the Vector K10 you have to remember it is a sub machine gun so it is a close quarters weapon. The Vector K10 is somewhat effective at longer range, but much more powerful at close range. So when you see an enemy with an assault rifle behind some cover far away don’t try to engage him. Flank him and force him into close quarters where he will most likely loose against you.
When you are in very close quarters use hip fire. At most other times the Vector K10 is better if you aim down its sights. That said, start with hip fire and then aim down the sights whilst firing which often grants an initial hit which goes a long way towards winning a gunfight. The class I suggest you use with the Vector focuses on survivability on objectives and helps make aim down sight combat easier:
When you are on an objective often enemies like to throw all sorts of explosives and tactical grenades your way. Flack Jacket reduces the damage you take from any explosives, although it is mostly useless against air support, and Tactical Mask reduces the impact of most tactical grenades (including the Concussion and Flash grenade and the Shock Charge).
Semtex is good for close quarter combat because you can throw and forget which the Frag Grenade doesn’t offer. I used Shock Charges because I was playing Hardpoint, but concussion or flash grenades are equally good. The pistol secondary helps you when your primary runs out (switch to your pistol instead of reloading).
As I said before hip fire is an important aspect of the combat with the Vector K10. Although it isn’t the best, most of the time aiming down the sights is better, but under some circumstances hip fire goes a long way. The Laser Sight makes your hip fire more accurate. When you do aim down the sights especially at medium range the recoil the Vector K10 does have is very noticeable. The Fore Grip helps you control that recoil better to put more bullets in your enemies.