I finally found my para best mod, I just use ERGONOMIC GRIP, RECOIL CONTROL STOCK , LONG RANGE BARREL AND PRECISION TRIGGER. And I never use acog on para because it zoom too much and increase its recoil and bloom. Without scope, it increase accuracy and reduce recoil and bloom. When you are like 5m of the enemy, just crouch and spray on the target, always work for me.
My old para best mod ERGONOMIC GRIP AND LONG RANGE BARREL.