Airsoft Guns and MW2

I've changed my mind, I might not get a Famas, I am getting either an M4A1 or a Famas.
The specifications on the M4A1 are: 380 fps w/0.12g BB 330 fps w/0.2g
It has a HI Capacity Magazine with 350 rounds and it can shoot farther than 100 feet.

The Famas has 440 FPS with 0.12g BBs, a Metal outer barrel, Metal gears and gear box, a Metal bipod, and a Semi and fully automatic toggle switch.
    For me, it just depends whether my parents are willing to pay more money, or not.

In MW2 I have a specific class I would like to talk about. I call it "Akimbo".
Here is the class' current build:

Primary Weapon: Ump-45 Akimbo
Secondary Weapon: .44 Magnum Akimbo
Equipment: Tactical Insertion
Special Grenade: Flash Grenade
Perk 1: Marathon
Perk 2: Stopping Power Pro
Perk 3: Steady Aim Pro
Death Streak: Painkiller
It is going to be changed to this:

Primary Weapon: Mini Uzi Akimbo

Secondary Weapon: M9 Akimbo
Equipment: Tactical Insertion
Special Grenade: Flash Grenade
Perk 1: Marathon Pro
Perk 2: Stopping Power Pro
Perk 3: Steady Aim Pro
Death Streak: Painkiller

The point of this class is to run and gun. I usually place a tactical insertion before sprinting into battle. Because when I die I just sprint around the corner again, and they do not expect it. Don't hope to get a EMP with this class unless you are VERY lucky. Because you will probably run out of ammo. If you care about you K/D, DO NOT USE THIS CLASS!!!!!!!! (bad gramr lolz) (bad spelling, hahahaha.)