Here are some US figures I picked up over on the Ambush Alley Black Market.
I imagine using them fairly freely as any small patrol unit of US soldiers or marines in Afghanistan, though if anyone can tell me exactly which service/year/theatre the weapons and camouflage matches I'd appreciate it
Platoon Command with Lieutenant, Platoon Sergeant, Machine-Gunner and Navy Corpsman
1st Fire Team moving along wall. As standard a fire-team comprises team leader (with M16), one rifleman (M16), one grenadier (M16 with M203) and one light machine gunner (M249).
2nd Fire Team moves around corner with Squad Sergeant alongside
3rd Fire Team takes up position in house
This small force would represent a change of pace, being just a small patrol or flanking force, without any significant assets.
Alternatively they may be able to team up with some Afghan Army / Mercenaries I'll post shortly or even with the British guys you've seen previously.