RULE 1. In the field you salvage every weapon,and bullets you can from your enemy and trade with others so that you can keep a good supply.
RULE 2. Make raids for the single purpose of making them waste their ammo while you locate their supply and either take it or blow it up.
RULE 3. Let them use their weapons on full automatic while you hide and shoot only when you have a specific target lined up and YOU only use single rounds. This also makes it harder for them to locate you.
A person shooting full automatic is always targeted by the enemy because they are an easy target to locate. A single shot is EXTREMELY hard to locate especially if there enough of you randomly shooting and moving location after each shot.
Jungle Survival Book 101. Lived it and survived it. IT WORKS.
You have to be smarter and more confident then your enemy.
He's our County Sheriff, now.
Bustin' caps is fun, and if you expect CQB could be essential, if done right.
But get a good rifle and scope and be able to effectively hit targets from long range, if you are in a situation where you can make use of that. One shot, one bullseye...