I have a suppressor (YHM Titanium Q.D. Phantom) which the stamp should be here sometime in March (fingers crossed). It is for my LMT 5.56 rifle. My plan is to purchase a Noveske 10.5" barrel with my LEO discount to shorten up the length with the can on it. Is there any 5.56 or .223 factory ammo out there that will allow even quieter operation? I figured the simple nature of the 5.56/.223 round won't allow for a more silent report but I thought I would ask.