Awesome to see this kicking back up- I've been a little occupied for the while.

1) Laufey, you can grab the Weapons Technician, who doubles up as the Explosives Expert and a general rifleman. The MX, SCAR and MSBS 

2) Queen, you've got Marksman I suppose- I'd advocate the Mk18 ABR (Advanced Battle Rifle), the MXM (Marksman variant of the MX), the MSBSA2 Marksman or maybe a SCAR-H Sniper, for the moment. I can brief you on some marksman optics that you might like, and maybe a Chest Rig as well as a more lightweight load rather than Huscarl's/Khukuri's assaulting gear.

3) Rare, could you add a little in history and skills? I can work with you on weapons/gear if you'd like to fine tailor a loadout (since it's more likely that the CTRG would be using a L22A4 as a PDW rather than the current-gen L22A2)- if it's possble, could your character also carry a Titan AT/NLAW?