[Suhiir]

Could do either - but...
Adding more accuracy doesn't cause the effect I'm looking for.
I want them to have somewhat more accurate and most importantly longer ranged fire.
As to Fire Control, not for individual weapons. Looking at the OOB's it is used (quite well) to represent inherent weapon stabilization. i.e. a tripod mounted machine gun is more accurate at any range then a bipod mounted one.

Quick story or two
Grenada - 1983

The US Army had to borrow M16 ammo from the Marines because their "suppressive fire" doctrine caused their units to run low on ammo. The failure was obviously in the logistic planning, BUT ... both Marine and Army troops carry the the same basic individual ammo load. The army of course went thru theirs far quicker due to doctrine.

In another instance an Army platoon ran into a Marine squad (do to some shifting of phase lines they wound up in the same place at the same time by accident). Since neither side knew about the other they had a little blue-on-blue action (no actual casulties tho as I recall). The Army platoon leader called back that he was under heavy attack by a company strength unit (due to the accuracy of the incoming fire) and began to withdraw. The Marines began to assault the Army position having suppressed it with their more accurate long range fire. About this time someone noticed both sides were American and the firefight stopped.
The Army guys absolutely could not believe that few rifleman could generate that level of accurate fire at that range.