Carbines/SMGs are obselete when you have Pistols 2x

Once you use a Walter PPS to one-shot enemies at 20 squares, you can't go back to using automatics, especially how SLOW they are.

I mean seriously, it's like you can get 15 or so shots off with a pistol, and meanwhile you can't even get two aimed 3-rnd bursts with an MP5SD6

...Granted, the MP5SD is naked and the pistol has a red dot sight...

But no, My personal-insert merc's loadout is usually

KAC SR-25 or DT SRS
Some AR/Carbine
Some Grenade Launcher, sometimes attached to the AR/Carbine (I'm prolly gonna pick up and keep an F2000 WS)
Grenades out the wazoo, i generally use em a lot too
Scoped Desert Eagle or suppressed SOCOM
and more recently a Walther PPS (fits in a Small pocket!)