The AN-94 Assault Rifle is the last assault rifle you unlock in Call of Duty Black Ops 2. It feels similar to the AK-47 in previous version of the Call of Duty franchise. The AN-94 has a twist, the first two rounds of a burst are fired at a higher rate. This guide explains how to use the AN-94 well and what the best class setup for it is.
The SMR assault rifle is the hardest weapon to use in Call of Duty Black Ops 2 I have found so far. It is basically an inferior version of the FAL DSW (click for a guide for that weapon) as the SMR is semi automatic with a slower fire rate, more recoil but higher damage than the FAL DSW. It is a very passive rifle to say the least. This guide explains how to use the SMR well and what the best class setup is.
The Scorpion EVO Sub Machine Gun is the last sub machine gun you unlock in Call of Duty Black Ops 2. It has a very high fire rate and good hip fire characteristics so it lends itself well to only using the hip fire, with a few modifications to the weapon. This guide explains what the best strategy with the Scorpion EVO is and what the best class setup is.
The MSMC is a sub machine gun with some characteristics of an assault rifle. It is good at medium to long range compared with other sub machine guns, but only better at medium range than assault rifles. It sounds very satisfying though, unless you put a silencer on it. This guide explains how to use it well and what the best class setup is.