Might have an idea, modify the Game into an easy D100% Dice Tabletop Campaign.
I've thought about it today, use RECON Rule System for dice.
Give 4 Attributes STRENGTH AGILITY ALERTNESS KNOWLEDGE
7 classes to choose from
Pointman
Medic
Heavy Wpns expert
Sniper
Squad Leader
Communications
Grunt

I made a CQC List, CQC stands for Close Quarter Combat. Unarmed fighting 

I have a table for shots fired a round for each weapon you wanna make.
I have skills for each class as well.

Whatcha think?